During the preparation for pregnancy, whether the husband eats acidic or alkaline does not have a big impact, as long as it is not harmful to the health of the body can be. There is no great restriction on the diet of the man during the preparation for pregnancy, generally normal and healthy diet can be. But men should pay attention to not smoking and drinking, also try not to take drugs that are harmful to the reproductive system. In order to avoid affecting the quality of sperm, which in turn affects the development of the embryo, leading to abnormal fetal development, miscarriage, malformation and so on. Men should also pay attention to maintaining a healthy lifestyle during the preparation for pregnancy. To have a regular routine, early to bed and early to rise, do not stay up late, to ensure sufficient sleep time. Can be appropriate physical exercise, improve physical fitness. Also pay attention to the surrounding environment, avoid contact with radioactive and chemical substances.