Itchy belly is may be caused by dry skin, but also eczema, contact dermatitis, as well as hives and other causes. 1. Dry skin: patients with dry skin will appear skin tight, flaky skin, itchy skin and other manifestations. If the patient has a dry belly, it will be manifested as itchy belly. 2. Eczema: the cause of eczema is not clear, and is considered to be related to heredity, immune function abnormalities, hormone levels in the body and other factors. Patients will appear pimples, erythema, blisters, itching and other symptoms, so patients with eczema belly will have symptoms of itchy belly. 3. Contact dermatitis: contact dermatitis may be caused by skin contact with exogenous irritants or contact with allergens, the patient will be manifested as pimples, blisters, itching, burning sensation, and so on, so that the patient will have the symptoms of itchy belly. 4. Other: patients with urticaria, atopic dermatitis, insect bite dermatitis and other diseases will also have an itchy belly performance. If it is dry belly skin caused by itching, can not be treated. For diseases caused by itchy belly, patients need to seek medical attention in time, under the guidance of the doctor to choose the appropriate measures for treatment.