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Honkai Star Rail Bailu build

In Honkai Star Rail, Bailu is an adorable doctor here to help her teammates on the Xianzhou Luofo. Find out all about her build, her light cone, and her relics.

Honkai Star Rail's Bailu swimming under the ocean, pasted on a purple PT background to match the lightning element

Honkai Star Rail’s Bailu is the adorable doctor from the Xianzhou Alliance, with powerful healing abilities and the tail of a fish… Or is it a dragon? She is well known for her out-there approach to prescriptions and diagnosis so to help you get familiar with her, we’re here to explore everything we know about Bailu’s build, relics, and more.

There are loads of new faces for you to meet on your Trailblazing journey, so make sure to check out our Honkai Star Rail banner guide, Honkai Star Rail tier list, and Honkai Star Rail codes. Alternatively, we’ve got more guides like this for Honkai Star Rail’s Black SwanHonkai Star Rail’s Acheron, and Honkai Star Rail’s March 7th.

Now, here are all the important details you need on Honkai Star Rail’s Bailu.

What’s the best Honkai Star Rail Bailu build?

Best light cone Night of Fright
Light cone alternatives Time Waits for No One
Best relic set Passerby of Wandering Cloud and Longevous Disciple/Messenger Traversing Hackerspace
Best planar ornaments Fleet of the Ageless
Main stats
  • Body: Outgoing healing or HP%
  • Feet: Speed
  • Planar sphere: HP%
  • Link rope: Energy regeneration rate or HP%
  • Speed
  • HP%
  • Effect resistance

Bailu is a five-star support unit with the power of lightning. She fills the role of main healer perfectly thanks to the high outgoing healing capacity from her skill, ultimate, and passive talent.

Bailu’s best build includes the five-star Night of Fright light cone which buffs her energy regeneration rate and healing output, a combination of two-piece Passerby of Wandering Cloud with two pieces of Longevous Disciple or Messenger Traversing Hackerspace, and a two-piece set of Fleet of the Ageless. All of her healing scales off her max HP, so double down on that stat to succeed.

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How do I use Bailu?

Like most healers, you’re not running Bailu in your team for her basic attack. Make sure you save your skill points to use her skill each turn, and treat her ultimate partially as an emergency healing button but also as a shield thanks to its invigorate effect mitigating incoming damage for two turns.

What are the best light cones for Bailu?

Night of Fright is the current best-in-slot light cone for all healers, including Bailu. It buffs her energy regeneration rate so you can use her ultimate more often while providing passive healing to allies and a handy attack boost. Sadly, as Honkai Star Rail’s Huohuo‘s signature light cone, it’s only available on her event light cone banner.

Time Waits for No One is a five-star light cone that is specifically built for Bailu’s kit, increasing her HP and outgoing healing abilities and buffing her attacks. Though more accessible than Night of Fright, this five-star light cone is obtained through gacha or by paying the expensive price tag in the shop, so it still requires a lot of work to get.

Honkai Star Rail Natasha‘s debut light cone, Post-Op Conversation is a great four-star alternative for Bailu as it buffs her energy regeneration for a faster ultimate and then buffs her ultimate’s outgoing healing. Perfect Timing is also a particularly good choice if you’re also running the Broken Keel planar ornament set, which we discuss more below.

Light cone Effect How to obtain
Night of Fright Increases Bailu’s energy regeneration rate by 12%. When any ally uses their ultimate, Bailu restores HP for the ally currently with the lowest HP percentage by an amount equal to 10% of the healed ally’s max HP. When Bailu provides healing for an ally, increases the healed ally’s attack by 2.4%. This effect can stack up to five times and lasts for two turns Limited light cone banner
Time Waits for No One Increases Bailu’s max HP by 12% and outgoing healing by 12%. When she heals allies, it records the amount of outgoing healing. When any ally launches an attack, a random attacked enemy takes additional damage equal to 50% of the recorded outgoing healing value. This additional damage is of the same type as Bailu’s, is not affected by other buffs, and can only occur once per turn Gacha, Starlight Exchange shop
Post-Op Conversation Increases Bailu’s energy regeneration rate by 8% and increases outgoing healing when she uses her ultimate by 12% Gacha
Perfect Timing Increases Bailu’s effect resistance by 16% and increases outgoing healing by an amount equal to 33% of her effect resistance. You can increase her outgoing healing in this way up to 15% Gacha

What are the best relics for Bailu?

We recommend equipping Bailu with Passerby of Wandering Cloud to boost healing output and HP. It can be difficult to get a full set of Passerby of Wandering Cloud with your desired sub-stats, so you can mix and match with Musketeer of Wild Wheat while you’re building her.

We’ve also tried a combination of Longevous Disciple and Passerby of Wandering Cloud to increase both Bailu’s outgoing healing and her max HP for extra healing buffs, or Messenger Traversing Hackerspace with Passerby for an additional speed boost so she can heal her allies more often.

Bailu’s best planar ornament relic set is Fleet of the Ageless as it further increases her max HP and therefore her healing output. For the late game, especially once you start fighting bosses like Honkai Star Rail’s Kafka, you can try out Broken Keel to prevent enemies from disabling Bailu’s healing and also grant your team a crit damage boost.

Relic set Effect Obtained from
Passerby of Wandering Cloud Two pieces equipped: increases outgoing healing by 10%
Four pieces equipped: immediately recover one skill point at the beginning of battle
Cavern of Corrosion: Path of Drifting in Jarilo-VI’s Corridor of Fading Echoes
Longevous Disciple Two pieces equipped: increases max HP by 12%
Four pieces equipped: when an enemy hits Bailu or an ally (including themselves) consumes Bailu’s HP, her crit rate increases by 8% for a certain number of two. This effect can stack twice
Cavern of Corrosion: Path of Elixir Seekers in The Xianzhou Luofu’s Alchemy Commission
Messenger Traversing Hackerspace Two pieces equipped: increases speed by 6%
Four pieces equipped: when Bailu uses her ultimate on any ally (including herself), speed for all allies increases by 12% for one turn. This effect cannot stack
Cavern of Corrosion: Path of Elixir Seekers in The Xianzhou Luofu’s Alchemy Commission
Musketeer of Wild Wheat Two pieces equipped: increases attack by 10%
Four pieces equipped: increases Bailu’s speed by 6% and her basic attack damage by 10%
Cavern of Corrosion: Path of Drifting in Jarilo-VI’s Corridor of Fading Echoes

Planar ornaments

Relic set Effect Obtained from
Fleet of the Ageless Two pieces equipped: increases Bailu’s max HP by 12%. When her speed reaches 120 or higher, all allies’ attack increases by 8% Immersion Reward devices in World 3 of the Simulated Universe
Broken Keel Two pieces equipped: increases Bailu’s effect resistance by 10%. When her effect resistance is at 30% or higher, all allies’ crit damage increases by 10% Immersion Reward devices in World 7 of the Simulated Universe

Relic stat recommendations

Main stats:

  • Body: Outgoing healing or HP%
  • Feet: Speed
  • Planar sphere: HP%
  • Link rope: Energy regeneration rate or HP%


  • Speed
  • HP%
  • Effect resistance

What’s the best team comp for Bailu?

Thanks to her powerful abilities and free resurrection once per battle, Bailu is a sought-after healer in a range of team comps despite her skill’s randomness. Running her with buffers and debuffers like Honkai Star Rail’s Pela and Honkai Star Rail’s Bronya helps to mitigate her lack of dispelling abilities too.

Here’s an example of a strong Bailu team comp:

Main DPS Support Support Healer
Honkai Star Rail Jing Yuan iconJing Yuan Honkai Star Rail Bronya iconBronya Honkai Star Rail Pela iconPela HSR BailuBailu

What are Bailu’s abilities?

Active skills:

Skill Effect
Basic attack: Diagnostic Kick (single attack) Bailu swings her dragon tail and deals lightning damage equal to 50% of her attack to a single enemy
Skill: Singing Among Clouds When Bailu shakes her gourd she immediately restores HP equal to 7.8% of her max HP plus 78 to an ally and invigorates them. This healing effect is randomly transferred among all allies and gets weaker by 15% with each transfer
Ultimate: Felicitous Thunderleap Bailu immediately restores HP equal to 9% of her max HP plus 90 to all allies, invigorates them, and extends invigoration for allies who previously had this effect

Passive skill:

Skill Effect
Talent: Gourdful of Elixir Bailu restores HP equal to 3.6% of her max HP plus 36 to invigorated allies when they are hit. This can trigger twice per battle. When an ally is knocked down, Bailu immediately heals them for 12% of her max HP plus 120. This effect can only trigger once per battle


Skill Effect
Saunter in the Rain Before the battle starts, invigorate all allies for two turns


Skill Effect
Qihuang Analects Healing an ally above their max HP increases their max HP by 10% for two turns
Vidyadhara Ichor Lines The invigoration effect can trigger once more
Aquatic Benediction Invigorated characters take 10% less damage from attacks

What are Bailu’s eidolons?

Eidolons in Honkai Star Rail are similar to Genshin Impact’s constellations, meaning you need to pull more than one copy of a character to unlock them. Here are Bailu’s:

Eidolon Effect
Level one – Ambrosial Aqua If the target ally’s current HP is equal to their max HP when invigoration ends, Bailu additionally regenerates eight energy for them
Level two – Sylphic Slumber After using her ultimate, Bailu’s outgoing healing increases by an additional 15% for two turns
Level three – Omniscient Opulence Increases the level of Bailu’s skill by two, up to a maximum of level 15, and the level of her talent by two, up to a maximum of level 15
Level four – Evil Excision Each instance of healing provided by Bailu’s skill makes the recipient deal 10% more damage for two turns. This effect can stack up to three times
Level five – Waning Worries Increases the level of Bailu’s ultimate by two, up to a maximum of level 15, and the level of her basic attack by one, up to a maximum of level ten
Level six – Drooling Drop of Draconic Divinity Bailu can heal two downed allies in total in one battle

What are Bailu’s ascension materials?

Character EXP materials can help you get Bailu to level 80, but she needs some extra materials at certain ranks to ascend. Here are all the materials you need for each ascension rank:

Required level Credits Ascension materials
20 4k Five extinguished core
30 8k Ten extinguished core
40 16k Three lightning crown of past shadow, six glimmering core
50 40k Seven lightning crown of past shadow, nine glimmering core
60 80k 20 lightning crown of past shadow, six squirming core
70 160k 35 lightning crown of past shadow, nine squirming core

Here’s where to get all of Bailu’s ascension materials:

  • Extinguished, glimmering, and squirming cores – obtain from certain fragmentum monsters on Jarilo-VI or in the Honkai Star Rail simulated universe, via synthesis, from assignment rewards, or in the embers exchange store
  • Lightning crown of the past shadow – drops from the Shape of Fulmination: Stagnant Shadow in Jarilo-VI’s Corridor of Fading Echoes

Honkai Star Rail Bailu: A screenshot of Bailu in-game using her skill, alongside three other figures who are blurred.

What are Bailu’s trace materials?

Traces are basically a Honkai Star Rail character’s abilities and bonus abilities. To max out all of Bailu’s traces, you’ll need the following materials:

  • 15 seeds of abundance, 72 sprouts of life, and 139 flowers of eternity
    • Rewards from the Bud of Abundance crimson calyx in Backwater Pass, or the embers exchange
  • 41 extinguished cores, 56 glimmering cores, and 58 squirming cores
    • Rewards from certain fragmentum monsters on Jarilo-VI or in the Honkai Star Rail simulated universe, obtain via synthesis, from assignment rewards, or in the embers exchange store
  • 12 guardian’s laments – rewards from the Echo of War: End of the Eternal Freeze
  • 11 tracks of destiny
  • Three million credits

Skill trace priority:

  • Ultimate = Talent > Skill > Basic attack

Major trace priority:

  • Vidyadhara Ichor Lines > Aquatic Benediction > Qihuang Analects

There you have it, everything you need to know about Honkai Star Rail’s Bailu. While you’re here, check out our build guides for Genshin Impact’s Diona, Genshin Impact’s Albedo, and Genshin Impact’s Xiangling. We’ve also got a handy Wuthering Waves codes guide and Wuthering Waves tier list for the new open-world ARPG.