Knot melon is also known as hairy melon. Cucurbitaceae annual climbing herbaceous plants, is a variant of winter melon. Festival melon originated in the south of China, is one of China's specialty vegetables, in the south of the ridge around the long history of cultivation, cultivation area is large. In Hainan, the festival melon cultivation has many years of history. Festival melon old melon, young melon are edible. Old melon storage and transportation, can regulate the market supply. Young melon meat smooth, light. Old melon and young melon can be fried, boiled or used as soup, but the young melon is better. Especially in Hong Kong, the petals fresh and not dry tender knuckleheads, but also as a high-grade vegetables to look at, knuckleheads in the melon vegetables, its sodium content and fat content are lower, often eat can play a role in weight loss. It also has the effect of clearing heat, summer, detoxification, diuretic, swelling, etc., is the ideal vegetable for the hot summer. In addition, the treatment of kidney disease, edema disease, diabetes, etc. also has a certain auxiliary effect. Therefore, knotty gourd is very popular in people's daily life, whether it is fried or boiled in soup. Festival gourd is also known as hairy melon. (A) Origin and distribution The knotty gourd is a variant of the winter melon genus. Winter melon is native to southern China, and it is assumed that knuckleberry is also native to the southern region of China. It has been cultivated in Guangzhou, China, for more than 300 years. It is now more commonly grown in Guangdong, Guangxi and Taiwan. It can be planted in spring, summer and fall, and is the largest type of melon in the area of Guangdong and Guangxi. In recent years, it has been cultivated in Fujian, Shanghai, Nanjing, Beijing and Chengdu. Shandong and other large cities in the suburbs have also begun to introduce. Due to the rapid flowering and fruiting of the festival melon, earlier maturity, melon shape is smaller than the winter melon, easy to eat contemporary small families, so the cultivation area to expand faster. In the Americas, there are also cultivated in the places where there are overseas Chinese settlements. (B) nutritional value and use of melon to eat young fruit-based, mature fruit can also be eaten. Each kilogram of flesh contains about 938 grams of water, 7 grams of protein, 5 grams of carbohydrates, vitamin C 690 milligrams. Festival melon is commonly known as small winter melon, because of its small plant shape, early maturity, strong resistance, resistance to storage and transportation, suitable for protected overwintering cultivation, early spring cultivation, so the cultivation area in Shandong is developing rapidly. Products in the winter and spring seasons are sold to Beijing, Tianjin area. In the spring open field cultivation has the possibility of replacing winter melon. (C) Characteristics of the melon for the cucurbitaceae winter melon in the genus of a variant, annual climbing herbaceous plants.