Self-help semen retrieval is a common phenomenon, usually may be related to no history of masturbation as well as excessive tension. 1. No history of masturbation: If the patient does not have the habit of masturbation, the patient does not know how to operate the self-service sperm extraction in the hospital, which may lead to difficulties in sperm extraction. 2. Excessive tension: When the patient goes to the hospital for self-service sperm collection, because he is not accustomed to the environment of the hospital, the patient will be excessively tense, resulting in the inability of the penis to erect, and then difficulties in sperm collection. If the patient has the above situation, it is recommended to relax emotionally, rest for a period of time before sperm retrieval, or watch some micro-movies, seek the help of a lover, wear a condom to retrieve sperm.