The lubricating fluid produced by the prostate gland may cause pregnancy. The lubricating fluid secreted by the prostate gland refers to prostatic fluid, which is one of the important components of semen, and also belongs to the precursor components of semen, the secretion of which will be controlled by androgens. Pregnancy is a physiological phenomenon caused by sperm and egg combining with each other to form a fertilized egg, and sperm is produced by the testes in the male body. Although prostate fluid itself does not cause pregnancy, it is very likely that the prostate fluid excreted by a man will contain a small amount of sperm, in which case it is also possible to cause pregnancy. Men should always wear a condom during sex to prevent pregnancy.