The common causes of itching at the stomach belt are contact dermatitis, eczema, and pressure urticaria. You can take oral antihistamines, topical glucocorticoid drugs. 1. Contact dermatitis: if the metal products of the belt buckle allergy, can lead to itchy belt, should replace the belt, can be used externally mometasone furoate gel and other glucocorticoid drugs, oral antihistamine drugs such as loratadine to improve. 2. Eczema: related to a variety of internal and external factors, repeated friction stimulation at the belt can induce eczema. Treatment should be oral antihistamine drugs such as cetirizine, etc., local application of glucocorticoid drugs such as hydrocortisone ointment to improve. 3. Pressure urticaria: The long-term compression of the belt can cause localized hives, accompanied by itching. Treatment should firstly release the compression, and secondly can take antihistamine drugs such as chlorpheniramine maleate, ebastine treatment. If you have the above symptoms, we need to clarify the cause of the disease and treat the cause. Specific medication should follow the doctor’s prescription.