A method automatically measures parameter data relating to wireless network environment in a code division multiple access(CDMA) system. First, if a server's telephone number is detected from power-on registration data stored in a storage device, then a connection with the server is attempted through a mobile station with a data service function using the server's telephone number. Thereafter, if there is test plan program data from the server after the connection is made, the parameter data is measured using another mobile station with a diagnostic monitor function based on the test plan program data. The measured parameter data is then collected and parsed to obtain sets of measured parameter data, each set having a different kind of measured data; and, finally, the sets of measured parameter data are transmitted to the server using the mobile station with the data service function when there is a data transmission request from the server.