Design and implementation for mobile information system of public malfunction confirmation based on PDA WANG Ben-chuan WANG Heng-shan (University of Shanghai for Science and Technology, College of Management, Shanghai, 200093, China) Abstract:The paper presents a mobile information system of public malfunction confirmation based on PDA and tells implementation of PDA client、net framework of M/S structure、configurations of software and hardware . It introduces some modules’ function and operation flow and mainly discusses the several key technologies using in this system. Key words:PDA; Public malfunction confirmation; GPRS; Web service