Many methods have been used to improve the adherence of patients in medical service. With the advance of mobile technology and popular use of mobile phones, it was believed that the patient-centered outcome could be improved by mobile telecommunication with the timely support of a patient by a health professional. Thus we hypothesize that mobile technology, reminding the patients the necessity of stent management in time by short message service (SMS), might increase the patient adherence in patients with benign pancreaticobiliary diseases after ERCP.