SP-1 - Hidden White

隐白 - Yǐn bái

Point Region: Toe

SP

Spleen Meridian

足太阴脾经 - Zú Tàiyīn Píjīng

Location & How to Find

Anatomical Location: On the big toe, at the corner of the toenail on the inner side (away from the second toe), about 0.1 cun from the corner, where the side edge of the nail meets the line of its base.

Distances are in cun, a unit that scales with each person's body. As a guide, the width of your thumb at its joint is 1 cun, and your four fingers held together, measured across the middle joints, are 3 cun.

How to Locate:

  1. Look at your big toenail
  2. Find its corner at the base, on the inner side, away from your second toe
  3. The point is just beside this corner
SP-1 (Hidden White) acupressure point location: On the big toe, at the corner of the toenail on the inner side (away from the second toe), about 0.1 cun from the corner, where the side edge of the nail meets the line of its base.

How to Apply Pressure

Once you have located SP-1, use only a light fingertip touch beside the nail; do not pinch or dig into the nail bed. Avoid it if the skin around the nail is broken, infected, or recently injured, and stop if it hurts.

Traditional Indications

In TCM, this point is traditionally used for:

  • Heavy menstrual periods
  • Mental restlessness
  • Abdominal distention
  • Insomnia
  • Digestive problems
  • Bloating

Related Health Concerns

AnxietyInsomniaBloating

Select a point to see its location, how to find it, and its traditional uses.

Important Precautions

Avoid this point with:

  • Broken skin around nail
  • Severe nail infections
  • Recent nail injury