Regarding the number of days of abstinence for semen examination, it is usually 2-7 days, with 3-5 days being the optimal time of abstinence; if this period is exceeded, the results of semen analysis are prone to abnormality. You should also pay attention to the following points before the semen test: First, you should have a good rest in the near future or the night before the semen collection to avoid nervousness and irritability; Second, you should avoid excessive drinking in the near future or the night before the semen collection and analysis; Third, you should avoid catching a cold in the near future; Fourth, you should avoid prolonged sedentary activities, saunas, or going into and out of the environment with radiation in the near future; Fifth, you should pay attention to the integrity of the semen collection before the collection of the sample to avoid spilling the semen. The reason for this is that male sperm are easily affected by the external environment. Because male sperms are easily affected by external environmental factors, the results of each semen test will vary. In order to better understand and assess male fertility, semen tests generally need to be performed more than 2-3 times for the results to be more accurate and of greater reference significance.