SP-1 - Hidden White
隐白 - Yǐn bái
Point Region: Foot
SP-1 Yinbai, meaning 'Hidden White,' is the Jing-Well and Wood point of the Spleen channel. Located at the corner of the nail on the big toe, this point is a 'hidden beacon' that regulates the body's internal energy and helps to restore a sense of balance. Its name, 'Hidden White,' alludes to its ability to bring a sense of order and harmony to the body's entire system.
Think of Yinbai as a point that helps to 'bring the light' to your body. It's invaluable for addressing issues like a restless spirit, a feeling of 'heat' in the body, and a lack of vitality. By regulating the body's internal energy, it helps to restore a sense of ease and freedom.
By regulating the body's internal energy, SP-1 helps to restore a sense of balance and inner peace. It's a point that reminds us that our true power comes from a calm and unburdened body.
Location & How to Find
Anatomical Location: At the junction of lines drawn along the medial border and base of the toenail.
How to Locate:
- Look at your big toe
- Find the inner corner of the toenail (toward your other foot)
- Locate where the nail meets the skin at this corner
- The point is right at this junction

Primary Functions
Digestive System
- Strengthens spleen qi and digestive function
- Treats chronic diarrhea and loose stools
- Improves appetite and food absorption
- Reduces abdominal bloating and distension
Circulatory System
- Controls bleeding and hemorrhage
- Treats menorrhagia and excessive menstrual bleeding
- Strengthens blood holding function of spleen
- Reduces bruising and bleeding tendency
Emotional & Mental
- Calms excessive thinking and worry
- Treats insomnia from mental overactivity
- Reduces obsessive thoughts and rumination
- Promotes mental calmness and focus
Nervous System
- Treats epilepsy and convulsions
- Reduces mental restlessness
- Calms hyperactive nervous system
Clinical Applications
Primary Indications
- Uterine bleeding
- Heavy menstrual periods
- Mental restlessness
- Abdominal distention
- Insomnia
- Digestive problems
- Bloating
Related Health Concerns
Common Conditions:
Related Acupoints
Select a point to learn about its location, primary functions, clinical applications, and protocols.
SP-1 Protocols
N/A
Important Precautions
- Broken skin around nail
- Severe nail infections
- Recent nail injury