Acupuncture Point Guanyuan (CV4)
Location:
Lie supinely; draw a line connecting umbilicus and the midpoint of the upper margin of pubic bone, a spot on this line,3/5 apart from umbilicus, or 2/5 apart from the midpoint of the upper margin of pubic bone.

Function:
Consolidating qi of the kidney and nourishing lower jiao.

Regional Anatomy:
Skin-subcutaneous tissue-linea alba-transverse fascia-extraperitoneal fat tissue-parietal peritoneum.
In the superficial layer, there are the anterior cutaneous branches of the anterior branch of the 12th thoracic nerve and the branches or tributaries of the superficial epigastric artery and vein.In the deep layer, there are the branches of the anterior branches of the 12th thoracic nerve.

Indications:
Enuresis, emission, frequency of micturition, retention of urine, hernia, Irregular Menstruation, leukorrhea with reddish discharge, dysmenorrhea, uterine bleeding, postpartum hemorrhage, lower abdominal pain, indigestion, Diarrhea, prolapse of the rectum, and flaccid type of apoplexy.

Prescription:
Combined use with usanli (ST 36) He-Sea Point) for treatment of impotence; with Sanyinjiao (SP6) for treatment of sterility; with Qihaishu (BL24), Shenshu (BL23), Pishu (BL20), Dachangshu (BL25), Sanyinjiao (SP6), and Zusanli (ST 36) for treatment of chronic dysentery; and with Zusanli (ST 36), Feiyang (BL 58), Sanyinjiao (SP6), Acupuncture Single Point Zhongji Front-Mu Point of the Bladder), and Shenshu (BL23) for treatment of renal colic.

Methods:
Insert the needle perpendicularly to 0.8-1.2 cun depth; needling response: local sensation of numbness and distention, radiating toward the urethra; moxibustion: using 7-14 moxa-cones, or mild moxibustion for 20-30 min.
Note:
Before puncture, the patient must have his bladder evacuated, or else the filled bladder, which is higher than the upper margin of pubic bone, would be penetrated, and cause the flowing of urine to the peritoneal cavity, leading to peritonitis.