Honkai Star Rail's Bailu is the adorable doctor from the Xianzhou Alliance, with powerful healing abilities and the tail of 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 you need to 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, Honkai Star Rail events, and Honkai Star Rail codes guides.
Here's everything in our HSR Bailu build:
What's the best Bailu build?
Bailu is a five-star lightning-element character who follows the path of Abundance. She fills the role of main healer perfectly, thanks to the high outgoing healing capacity from her skill, ultimate, and passive talent.
Here's a brief overview of our best Bailu build:
| Rarity | ★★★★★ |
| Element | Lightning |
| Path | Abundance |
| Best light cone | Night of Fright |
| Light cone substitute | Time Waits for No One |
| Best relic set | Warrior Goddess of Sun and Thunder |
| Best planar ornaments | Fleet of the Ageless |
| Main stats |
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| Sub-stats |
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Bailu's best build includes the five-star Night of Fright light cone, which buffs her energy regeneration rate and healing output, a four-piece set of Warrior Goddess of Sun and Thunder, 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.
How to use Honkai Star Rail's 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.
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.
Here are the best HSR Bailu light cones:
| 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 |
| 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 |
| Post-Op Conversation | Increases Bailu's energy regeneration rate by 8% and increases outgoing healing when she uses her ultimate by 12% |
| 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% |
What are the best relics for Bailu?
Bailu's best relic set is Warrior Goddess of Sun and Thunder. It's the best-in-slot choice for all healers, offering a 12% speed buff and a team-wide crit damage boost just by healing your allies.
We recommend equipping Bailu with Passerby of Wandering Cloud to boost healing output and HP. 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.
Here are HSR Bailu's best relics:
| Warrior Goddess of Sun and Thunder | Two equipped: increases speed by 6% Four equipped: when Bailu provides healing to ally targets other than herself, she gains "Gentle Rain," which lasts for two turns and can only trigger once per turn. While Bailu has "Gentle Rain," speed increases by 6%, and all allies' crit damage increases by 15%. This effect cannot stack |
Obtain from: Cavern of Corrosion: Path of Thundersurge in "Cloudedge Bastion Ruins" Eye of Twilight, Amphoreus |
| Passerby of Wandering Cloud | Two equipped: increases outgoing healing by 10% Four equipped: immediately recover one skill point at the beginning of battle |
Obtain from: Cavern of Corrosion: Path of Drifting in Jarilo-VI's Corridor of Fading Echoes |
| Longevous Disciple | Two equipped: increases max HP by 12% Four 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 |
Obtain from: Cavern of Corrosion: Path of Elixir Seekers in The Xianzhou Luofu's Alchemy Commission |
| Messenger Traversing Hackerspace | Two equipped: increases speed by 6% Four 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 |
Obtain from: Cavern of Corrosion: Path of Elixir Seekers in The Xianzhou Luofu's Alchemy Commission |
Planar ornaments
| Fleet of the Ageless | Two equipped: increases Bailu's max HP by 12%. When her speed reaches 120 or higher, all allies' attack increases by 8% | Obtain from: World 3 of the Simulated Universe, or Divergent Universe: Untoppled Walls |
| Broken Keel | Two equipped: increases Bailu's effect resistance by 10%. When her effect resistance is at 30% or higher, all allies' crit damage increases by 10% | Obtain from: World 7 of the Simulated Universe, or Divergent Universe: Fruit of Evil |
| Giant Tree of Rapt Brooding | Two equipped: increases Bailu's speed by 6%. When Bailu's speed is 135/180 or higher, increases her outgoing healing by 12%/20% | Obtain from: Divergent Universe: Unceasing Strife |
Relic stat recommendations
Main stats:
- Body: Outgoing healing or HP%
- Feet: Speed
- Planar sphere: HP%
- Link rope: Energy regeneration rate or HP%
Sub-stats:
- 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.
In particular, Qihuang Analects's overhealing specifically benefits Honkai Star Rail's Blade, as he is consistently below half health thanks to his self-damage system.
Here are some examples of strong Bailu team comps:
 Jing Yuan |
 Bronya |
 Pela |
 Bailu |
 Blade |
Bronya |
 Silver Wolf |
Bailu |
 Kafka |
 Black Swan |
 Ruan Mei |
Bailu |
 Feixiao |
 March 7th (Hunt) |
 Robin |
Bailu |
What are Bailu's abilities?
Here are all of Bailu's skills and abilities at level one. Keep in mind that the multipliers for each of these skills increase as you level them up.
Active skills:
| Basic attack | Diagnostic Kick 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 |
Talent and technique:
| Talent | Gourdful of Elixir After an enemy hits an ally target with Invigoration, restores the ally's HP for 3.6% of Bailu's max HP plus 36. This effect can trigger two times. When Bailu's teammate receives a killing blow, they will not be knocked down. Bailu immediately heals the ally for 12% of Bailu's max HP plus 120 HP. This effect can trigger one time per battle |
| Technique | Saunter in the Rain Aat the start of the next battle, all allies are granted Invigoration for two turns |
Major traces:
| A2 | Qihuang Analects When Bailu heals a target ally above their normal max HP, the target's max HP increases by 10% for two turns |
| A4 | Vidyadhara Ichor Lines Invigoration can trigger one more time |
| A6 | Aquatic Benediction Characters with Invigoration receive 10% less damage |
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 all of Bailu's eidolons:
| E1 | 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 |
| E2 | Sylphic Slumber After using her ultimate, Bailu's outgoing healing increases by an additional 15% for two turns |
| E3 | 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 |
| E4 | 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 |
| E5 | 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 |
| E6 | 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 of Bailu's ascension materials:
| 20 ➔ 30 |
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| 30 ➔ 40 |
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| 40 ➔ 50 |
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| 50 ➔ 60 |
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| 60 ➔ 70 |
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| 70 ➔ 80 |
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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
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 Yoimiya, Genshin Impact's Xinyan, and Genshin Impact's Hu Tao.