Itchy glans for 1 month may be caused by circumcision, mycosis glabellaris and allergy. 1. circumcision: glans itchy for a month may be caused by circumcision, the foreskin completely wrapped glans, easy to form urinary scales in the inner plate of the foreskin during urination, distributed around the coronal groove, long term stimulation can cause glans itchy symptoms. 2. Mycotic glans: mycotic glans is mainly sexual contact with women suffering from mycotic vaginitis, but also may not pay attention to personal hygiene, thus causing mycotic penile head circumcision. 3. Allergy: a little itchy glans may also be allergic, but also can be accompanied by localized redness and swelling or localized rashes and other symptoms, can also be seen in the systemic allergies. The patient appeared glans itchy phenomenon of 1 month, need to go to the regular hospital to find out the cause of the disease in a timely manner, in the doctor’s advice under the correct treatment.