Sperm is produced by the testes and is the male reproductive cell, also known as the sex cell. Its shape is very similar to that of a tadpole, with a large “head” and a long “tail”, with a total length of 50-60 microns. The head is oval and flat, containing a concentrated nucleus, with the first 2/3 of the nucleus covered by the acrosome. The tail is divided into four segments, namely, the neck segment, the middle segment, the main segment and the end segment. The neck segment is the shortest and contains the anterior centriole; the middle segment has an axoneme and is surrounded by a spiral mitochondrial sheath; the main segment has a central axoneme and a peripheral fiber sheath; the end is very thin and consists of a cell membrane wrapped around the axoneme. The sperm tail can pry from side to side to make the sperm swim forward. Depending on the wagging of the tail, the sperm can swim forward. Sperm carry half of the genetic information from the father, and there are two types of sperm: those carrying the X chromosome, which give birth to a girl when combined with an egg, and those carrying the Y chromosome, which give birth to a boy when combined with an egg. To conceive properly, the sperm must reach a certain number. It is generally considered that more than 60 million per milliliter is normal, 20 million to 60 million is a reduced number, and if it is less than 20 million, it is not easy to conceive. The process of sperm formation from round cells to cells with flagella in the testicular varicocele can be divided into the reproductive phase, the growth phase, the maturation phase and the forming phase. The reproductive phase is the process in which the spermatogonia differentiated from the primordial germ cells divide several times to increase their number and eventually become primary spermatocytes. The anagenesis is the process of accumulating nutrients and increasing the size of primary spermatocytes. 3.Maturation stage, after two maturation divisions (meiosis), the DNA content in the nucleus of primary spermatocytes is reduced by half to become haploid (a very small amount remains diploid) and becomes a still round spermatocyte through secondary spermatocytes. 4, Formation phase, is the process of sperm cell evolution into spermatozoa, but also the nuclear condensation, Golgi complex formation acrosome, centrioles produce tail process.