Nonphenoxyethanol pessary is a short-acting contraceptive pill, can kill sperm through non-ionic surface active ingredients and achieve the purpose of contraception, the correct use of contraceptive rate success rate is still relatively high, the main side effects are the following points: 1, stimulation caused by vaginal discharge increased, appear perineal damp and other discomfort. If too frequent use, too much secretion may also increase the chances of eczema in the mucous membrane of the pubic skin; 2, the use of nonyl phenyl ether pessary sensitive body women may cause allergies, resulting in local redness, swelling, itching, pain, etc.. Some patients because of itching and excessive scratching, may cause local skin mucous membrane broken infection; 3, nonoxynol pessary is a vaginal topical medication, need to strictly follow the instructions to use in order to achieve the purpose of contraception, otherwise it is easy to cause contraceptive failure, resulting in the occurrence of unwanted pregnancy.