Itchy mucous membrane inside the foreskin of the penis is most often seen in the foreskin scale stimulation, circumcision, and warts and other sexually transmitted diseases, further examination is needed in order to clarify the cause of the disease. 1. Foreskin scale: mostly seen in patients with phimosis and circumcision, the secretion of sebaceous glands inside the foreskin accumulates inside the foreskin and glans, and the foreskin scale can be formed if you don’t pay attention to clean up for a long time, which can cause itchiness by stimulating the mucous membrane inside the foreskin. 2. Circumcision: mainly caused by bacteria, viruses and fungi and other pathogenic microorganisms caused by infection, but also can be seen in the stimulation of foreign objects on the foreskin caused by the patient can appear in the mucous membrane of the foreskin itching, some may be accompanied by redness, swelling, pain and other symptoms. 3. Sexually transmitted diseases: the more common are condyloma acuminatum, is caused by human papilloma virus infection, especially papular condyloma acuminatum, mostly occurring in the foreskin, can cause the mucous membrane of the foreskin itching feeling, accompanied by the presence of small pimples. There are many other causes of penile mucous membrane itching, it is recommended that the patient timely medical treatment, improve the auxiliary examination, in order to clarify the cause of the disease, and then by the professional physician for the cause of the corresponding treatment.