As we all know, semen examination is the most common examination in male practice. Here, the common considerations for semen examination are listed as follows: (1) Specimens should preferably be collected after 48 hours of abstinence, but not longer than 7 days. (2) Two specimens should be collected for the first analysis, and the time between collections should not be less than 7 days or more than 3 months. If the results of the two analyses are far apart, the sperm should be collected again for additional analysis. This is because the sperm production of each man can fluctuate considerably. (3) The collection of semen specimens should preferably be done in a separate room near the laboratory, otherwise, the specimens should be delivered to the laboratory within 1 hour of collection. (4) Semen must be collected using the masturbation method and ejaculated into a clean, wide-mouth container. (5) Do not use condoms to collect semen because ordinary condoms can affect the survival of sperm. The interrupted intercourse method of semen collection is undesirable because there is a high risk of losing the initial portion of ejaculated semen with the highest sperm density. (6) For each examination, semen should be collected intact in a container, and incomplete semen specimens should not be analyzed.