Sperm deformities in men are generally referred to as sperm malformations, and infertility can generally occur with a malformation rate greater than 85%. Greater than 96% is known as dyszoospermia. Normal sperm morphology is like a tadpole, consisting of three parts: the head, the neck and the tail. Only sperm with all three parts normal are considered normal, and abnormalities in any part should be recorded as abnormal sperm. If the percentage of normal spermatozoa in the semen is less than 4%, it is called dysmorphic spermatozoa. When observing the morphology of sperm, attention should be paid to the presence of red blood cells, white blood cells and other abnormal cells increase, which helps to clarify the cause of the disease. When a man has a high sperm abnormality rate, the cause should be clarified under the guidance of a doctor so that it can be actively treated.