Sperm A+B is 71% means that 71% of the total spermatozoa with forward-moving spermatozoa are in the normal range. Sperm are generally categorized into four grades, with grade A being sperm that move forward quickly, grade B being sperm that move forward slowly, grade C being sperm that do not move forward, and grade D being sperm that do not move. During fertilization, the ability to move forward facilitates the union of sperm and egg, so the viability of sperm is generally judged based on this, that is, the percentage of sperm with A and B grades. According to the WHO 4th edition diagnostic criteria, it is considered normal to have A+B greater than or equal to 50%, so sperm A+B of 71% is within the normal range, and is considered to have high sperm motility. If you are not feeling well or have not been pregnant for a long time, it is recommended that you go to the hospital in time.