Weak spermatozoa can potentially lead to a biochemical pregnancy. Generally, a biochemical pregnancy refers to a premenstrual miscarriage, which may be the result of a failed fertilization of the egg or a chromosomal abnormality in the embryo. In men, weak spermatozoa may be accompanied by poor sperm quality, when the sperm combines with the egg to form a fertilized egg. Due to poor sperm quality, the fertilized egg splits poorly and the embryo develops abnormally, which can easily cause embryo suspension and may lead to biochemical pregnancy. It is recommended that both husband and wife perfect a good detailed examination before preparation for pregnancy. If weak spermatozoa occurs, you should quit smoking and alcohol in your life, reduce your weight, reduce fat intake, eat a light diet, and live a regular life. Adjust the physical state and then spare, to reduce the birth of inferior baby.