Legal analysis: selling diet pills may violate the crime of producing and selling fake drugs, and may also violate the crime of selling toxic drugs. Among harmful foods, when diet pills contain prohibited drugs explicitly prohibited by the state, it will constitute the sale of toxic harmful food, and the weight loss amount is 654.38+10,000 yuan, which is a huge amount. The court will make a judgment according to whether it causes personal injury. If diet pills cause harm to people or other more serious situations. He will be sentenced to fixed-term imprisonment of 10 years and fined according to law.

Legal basis: Article 141 of the Criminal Law of People's Republic of China (PRC), whoever produces or sells counterfeit drugs shall be sentenced to fixed-term imprisonment of not more than three years or criminal detention and fined; Whoever causes serious harm to human health or has other serious circumstances shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and fined; Whoever causes death or has other particularly serious circumstances shall be sentenced to fixed-term imprisonment of not less than 10 years, life imprisonment or death, and shall also be fined or confiscated. Drug addicts who knowingly provide counterfeit drugs to others for use shall be punished in accordance with the provisions of the preceding paragraph.