Hot and sour noodle originated in western sichuan area, sichuan is in guizhou province and other places of traditional snacks in chongqing in sichuan province, belongs to the sichuan chongqing guizhou snacks is characterized by spicy delicious sweet sour oil and not be bored with hot and sour powder main powder by sweet potatoes, red tiaoxi, peas mixed in proportion, and the farmers using traditional manual system and become the hot and sour powder leakage from southwest folk, feeding material to local handmade tapioca, give priority to in order to highlight the hot and sour taste