Possible causes of foreskin enlargement: 1, the patient may have a prepuce or foreskin orifice narrowing, due to erection or other reasons leading to foreskin imbedded, at this time there will be poor reflux and cause foreskin enlargement, except for enlargement may also be accompanied by pain and urination difficulties and other symptoms. This situation is recommended to seek medical examination, if the diagnosis of foreskin embedded, it is recommended to perform manual reset, such as foreskin swelling is more powerful, difficult to reset, if necessary, need to perform incision and reset surgical treatment. 2, acute allergies, mosquito bites are seen in the summer, after swimming and other allergic edema, at this time, usually pain is not obvious, visible foreskin translucent edema, it is recommended to take oral anti-allergy drugs or topical anti-allergy drugs To reduce edema. The actual fact is that you can choose loratadine dispersible tablets or mometasone furoate cream for external application, observe whether the enlargement has decreased, after external application treatment without any improvement, it is recommended to seek medical examination to confirm the diagnosis. 3, after surgery is common in the foreskin reflux caused by poor enlargement, at this time only need regular change of medication, regular inspection can be, belongs to the normal post-operative phenomenon.