Sperm rapid forward motility a and b are low, and if they are slightly reduced, pregnancy is still possible. If it is significantly reduced, it makes it more difficult to conceive normally. Grade a indicates excellent sperm motility with rapid straight forward movement; grade b indicates very good sperm motility with straight forward movement. The normal value for forward-moving sperm is that grade a + b should be ≥50%, and pregnancy is compromised if <50% of forward-moving sperm are grade a + b, or <25% of sperm are grade a-moving. If the rate of forward-moving sperm is low, it means that the sperm's mobility is insufficient, and the sperm don't have enough mobility to enter the woman's ovaries, which will affect the woman's pregnancy. The patient should pay attention to develop good habits of work and rest, avoid contact with harmful substances, appropriate physical exercise, improve physical fitness, and stimulate the healthy production of spermatozoa. If the patient has low anterior motility a and b, it is recommended to consult a doctor in time, under the guidance of the doctor, improve the relevant examination, clarify the cause of the disease, symptomatic treatment, and improve the quality of spermatozoa.