Shen Hai Long Capsule for Male Asthenospermia

Inclusion Criteria: 1. Age range from 22 to 50 years old; 2. Patients with mild to moderate asthenospermia, that is, at least two normative semen analyses indicated that 10%≤PR percentage \< 32% and the total number of PR sperm ranged from 5 million to 20 million; 3. At least two standard semen analyses indicated that sperm concentration ≥15×106 /ml; Sperm normal morphology rate ≥4%; 4. No other Chinese and Western drugs for the treatment of oligospermia, weak and malformed spermia have been taken in the past 3 months; 5. The subject voluntarily participates and signs the informed consent. Exclusion Criteria: 1. Varicocele, ejaculatory duct/seminal vesicle cyst, anti-sperm antibody (+); 2. Genital tract infection: seminal plasmic elastase \> 1000ng/ml or leukocyte semen disease (peroxidase positive cell concentration in semen more than 1×10\^6/mL); 3. Erectile dysfunction, ejaculation disorders; 4. suffer from mental disorders, immune system diseases; Severe impairment of liver and kidney function (serum transaminase ≥2× upper limit of medical reference value, creatinine clearance ≤40ml/min or active stage of chronic kidney disease); 5. Patients with allergic history or constitution to therapeutic drugs; 6. Patients who have taken drugs affecting the study within 3 months, such as antitumor and antiepileptic drugs, etc.