The cause of anal wet itch, can be summarized in the following aspects of the content, mainly with the abnormal secretion of anal glands increased: 1, the end of the rectal inflammatory reaction, inflammation will cause glandular hypersecretion, local mucosa redness and swelling, so the patient will have anal wet itchy feeling. 2, rectal mucosal prolapse, prolapsed mucous membrane will be piled up in the anus, affecting the anus mouth of the closed. Local gland secretion will be distributed near the anus. 3, the more serious internal hemorrhoids, can also cause and rectal mucosal prolapse similar clinical response, resulting in anal wet itching, or even eczema. 4, some parasites will be directly parasitic in the folds around the anus, in some cases can be viewed live worms, worms will secrete fluids, will also cause local itching sensation.