Bitter melon is the fruit of momordica charantia L produced in tropical areas. It tastes bitter with the characteristic feature, coolness. According to the traditional Chinese pharmacology .It can expel heat, brighten eyes, eliminate toxin, decrease blood sugar and invigorate human body. It is used in the folk prescriptions in India, Africa and southeast America. Chrantin, the active ingredient in it is yellowish to yellow powder, tastes bitter. It can treat pyreticosis, polydipsia, summerheat stroke, high fever and pain, carbuncle, erysipelas malignant apthae, diabetes and Aids