Abstinence for half a month to check the quality of semen may have a negative impact on the quality of semen and can affect the normal level of body semen. If you want to check the quality of sperm, it is recommended that you generally need to abstain from sex for 3-5 days, and you should not abstain for too short a period of time or continue for too long. This is because if the abstinence is too long, it may cause some pressure on the sperm in the body, leading to sperm stagnation, which may adversely affect the quality of semen. If the abstinence time is too short, it may also lead to insufficient time for the replenishment of sperm production. So it is best to follow the prescribed abstinence time before doing so to reflect the true condition of the body, so it is best to abstain from sex for 3-5 days.