The thin consistency of semen may be a physiological phenomenon, or it may be the cause of poor semen quality and urinary tract infection. 1. Physiological phenomenon: for example, frequent masturbation or frequent sexual intercourse tends to result in the discharge of more semen, which can cause the appearance of thin semen consistency. 2. Poor semen quality: A variety of factors (varicocele, lack of trace elements, chemical environment, etc.) stimulation will result in poor semen quality, which will also lead to thin semen consistency. 3. Urinary infections: Infectious diseases such as seminal vesiculitis, epididymitis, orchitis, prostatitis, etc. may also lead to thin semen consistency. There are a variety of possible causes of thin semen consistency, such as timely medical treatment, improve the examination, for the phenomenon of pathology, need to follow the doctor’s instructions for treatment.