In fact, buckwheat itself belongs to coarse grains, and eating more can achieve the effect of slimming. However, the processed weight loss products are likely to be doped with chemicals, and it is best not to eat them. Although it will achieve slimming effect in a short time, it will have a great rebound. Scientific weight loss should be combined with proper diet and reasonable exercise, which has obvious effects and is beneficial to health. Scientific diet should reasonably reduce food intake on the basis of ensuring the intake of essential nutrients. It is suggested to adhere to the dietary principles of "eat well early, eat well at noon and eat less at night" and "eat more and eat less". Scientific sports should make a plan suitable for one's physique and carry it out persistently. It is suggested to choose aerobic exercise, jogging, long-distance running, load running, brisk walking, swimming, jumping steps, leg lifting, cycling, or borrowing indoor pedal exercise bike. These exercises are very effective in reducing leg fat.