The crystalline particles in semen are mainly considered to be related to factors such as long-term non-ejaculation, semen non-liquefaction and urinary tract infections. 1. Long-term non-ejaculation: long-term no sex or masturbation, semen retention in the body, which can lead to a thicker semen, and then the phenomenon of crystal particles in the semen. 2. Semen is not liquefied: ejaculated semen is thicker, and can not be liquefied normally, can also lead to the phenomenon of semen crystal particles. 3. Urinary tract infections: diseases such as prostatitis and seminal vesicle adenitis may cause inflammatory secretions to mix with the semen, leading to obvious abnormal changes in the semen. And such diseases will also reduce the secretion of hydrolytic enzymes, resulting in sperm that is difficult to liquefy for a long time, and then the symptom of having crystalline particles. If this phenomenon occurs for a long time, attention should be paid to it, and early medical examination should be conducted to confirm the cause of the disease, and treatment should be carried out in a scientific and reasonable way under the guidance of the doctor.