The redness and swelling of the foreskin and cracked glans may be caused by glans circumcision, gonorrhea, condyloma acuminatum, genital herpes and other causes. 1. Foreskin glansitis: Foreskin glansitis may be caused by fungal or bacterial infection, as well as urinary irritation, allergic reactions, autoimmune diseases and other factors. Patients will have erythema, edema, erosion, ulceration and other manifestations of the glans skin mucosa, so patients will have the symptoms of red and swollen cracks on the foreskin and edema on the glans. 2. Gonorrhea: gonorrhea is considered to be caused by Neisseria gonorrhoeae infection, patients will show burning urethral opening, redness, swelling, fever, a small amount of mucus discharge, glans pustules or ulcers, etc., so that the patient will be swollen and swollen foreskin cracked glans erythema performance. 3. Condyloma acuminatum: Condyloma acuminatum is considered to be caused by human papilloma virus infection, the patient’s glans or penis or the appearance of reddish granules, or papillary, cauliflower-like lesions, the surface of these lesions will appear ulcerated, vesicles, oozing, etc., so the patient will be manifested as a swollen and swollen foreskin cracked glans red and swollen. 4. genital herpes: genital herpes is mainly caused by herpes simplex virus infection, patients will be around the genital ulcers, vesicles, redness, swelling, itching, pain and other symptoms, some of the patients will be red and swollen foreskin cracks, and the glans is prone to redness and swelling. It is recommended that patients appear foreskin redness and swelling cracks glans redness and swelling need to seek medical attention in time, the doctor will choose appropriate measures for the cause of the treatment.