The first biochemical pregnancy how to avoid the second biochemical pregnancy first of all to do a good job of pre-pregnancy physical examination, including both husband and wife should be examined, dietary adjustments, strengthen the body exercise and so on. 1. Pre-pregnancy examination: the main causes of biochemical pregnancy abortion are abnormal quality of sperm and egg, chromosomal abnormalities, endometrial dysplasia, hormone level secretion abnormalities. Before getting pregnant, both husband and wife should do a good job of the above relevant examinations, in addition to the exclusion of abnormalities, before being able to enter the normal stage of preparation for pregnancy. 2. Dietary adjustments: couples in the preparation period to eat a reasonable diet, prohibit alcohol, so as to avoid abnormal development of eggs and sperm biochemical pregnancy chances of increasing. 3. Pay attention to rest, strengthen exercise: couples in the preparation period should pay attention to rest, avoid staying up late, appropriate physical exercise, can improve the body’s resistance, to prevent the sperm and egg development. About the first child biochemical pregnancy how to avoid the second child biochemical pregnancy have doubts about the proposal to consult a doctor.