Course
The channel starts from the tip of the medial side of the great toe(Yin-bai,SP1).From there it runs along the junction of the red and white skin of the medial aspect of the great fot ,passes the posterior surface of ¡°Hegu¡±,the nodular process on the medial aspectof the first metatarsophalangeal joint and ascends in front of the medial malleolus to the medial aspect of the calf .It makes its way along theposterior border of the tibia,ascends in front of the Liver Channel of Foot-Jueyin,goes through the anterior medial aspect of the knee and thigh,and into the abdominal cavity,then enters its pertaining organ ,the spleen,and communicates with the stomach.From there it goes through the diaphragm,and upwards along the two sides of the throat,reaches the root of the tongue and spreads over its lower surface.
The branch of the channel sprouts from the stomach,goes upwards through the diaphragm,disperse into the heart and connects with Heart Channel of Hand-Shaoyin.

Diji(SP8)
Loeation :On the medial side of the leg and on the line connecting the tip of the medial malleolus and Yinlingquan (SP9), 6 cun from the tip of the medial malleolus, posterior to the medial border of the tibia.
Indications : Abdominal pain, distention of the abdomen, diarrhea, edema, dysuria, emission, irregular menstruation. dysmenorrhea.
Method:Puncture perpendicularly 0.5-1.0 inch.Moxibustion is applicable.
Regional anatomy
Vasculature:Anteriorly,the great saphenous vein and the branch of the genu suprema artery ;deeper,the posterior tibialartery and vein.
Innervation:Superficially ,the medial crural cutaneous nerve;deeper,in the posterior aspect,the tibial nerve.

The lung Meridian picture of Diji(SP8) Acupoint	Body surface picture of Diji(SP8) Acupoint
Anatomy picture of Diji(SP8) Acupoint	Section picture of Diji(SP8) Acupoint