Weak spermatozoa are A-grade sperm plus B-grade sperm <50% or A-grade sperm <25%. According to WHO 5th edition semen analysis criteria score: forward moving sperm % (PR), non-forward moving sperm % (NP), inactive sperm % (IM). Grade A should be above 25% or Grade A+B should be above 50% with normal sperm motility; PN+NP is greater than or equal to 40% or PN is greater than or equal to 32% with normal sperm motility. Therefore, weak spermatozoa is A-grade sperm plus B-grade sperm <50% or A-grade sperm <25%. Usually, the appearance of weak spermatozoa is considered to be related to inflammation of the reproductive system, long-term abstinence, etc. Inflammation such as prostatitis, varicocele, orchitis, etc.. It is recommended that patients go to the urology department of professional hospitals to identify the cause of the disease and carry out the next step of symptomatic treatment, patients need to keep the local clean and hygienic in their daily life, try not to make the testicles localized in a long time in the high temperature, more rest, more exercise.