A meal or camellia tea saponin extract purposes. It is used Rumen fermentation control. Said control Rumen Fermentation: At its adding ruminant diet (1) Tea Seed Meal add ruminant diets, the per kg body weight every day to add 0.05 to 7.00 grams, (2) tea soap Add Su-ruminant diets, the per kg body weight every day to add 0.01 to 0.70 grams. In ruminants such as cattle and sheep diets add an appropriate amount of tea seed cake (meal) or after the tea saponin, low dosage, the rumen protozoa in part by inhibition to kill, high-added volume of rumen protozoa were stunning kill; with the addition of the increase in rumen volatile fatty acids, microbial protein production, improve the proportion of propionic acid, ammonia nitrogen, methane production and the decline in the number of methane bacteria, improve feed utilization, animal performance for increased daily gain . Cattle and sheep farms to reduce costs and increase breeding efficiency.