A normal sperm morphology of 1% may have some impact on IVF. In general, a normal sperm morphology rate of 4% is considered normal, and when it is less than 4%, it is generally considered to have a high rate of sperm malformations. IVF also requires a normal sperm morphology rate of 4% or higher for men, otherwise it may reduce the success rate of IVF. The reasons for higher sperm abnormality rate may be low androgen level, physical damage to testicles and epididymis, such as long-term exposure to rays, radiation and some bad lifestyle. It is recommended to consult a professional doctor in time to clarify the cause and treat it actively before trying IVF to improve the success rate.