The precautions for life before male fertility: 1. Avoid staying up late. Staying up late has a great impact on the quality of semen. It is recommended to rest before 22:00. 2, avoid contact with high temperature environment, do not steam sauna and soak very hot bath. Temperatures higher than 38 degrees can cause a decrease in sperm quality (recent fever can cause a decrease in sperm quality). 3. Please do not smoke and drink alcohol. Smoking and drinking alcohol have a great impact on sperm quality. 4, diet: a balanced diet with appropriate amounts of fresh vegetables and fruits, tomatoes, garlic, lean meat, eggs, etc., can help improve semen quality. 5, keep a happy mood, avoid excessive mental tension and anxiety. 6, do not be sedentary, moderate exercise. 7, do not wear tight underwear. 8, avoid contact with harmful rays and toxic and harmful substances.