The present invention provides a data processing system and a data collection method by which measurement data can be read in and transmitted easily, without connecting a terminal for transmitting data with various types of measurement apparatuses, and further provides a measurement apparatus to be used for the data processing system and the data collection method. The data processing system at least uses: a measurement apparatus (10) provided with a display screen (13)； a terminal (20)； and a server (30). The measurement apparatus (10) includes: a measurement portion for obtaining measurement data； a code transforming portion for transforming the measurement data into a bar code, a two-dimensional code (8) or a composite code； and a display portion for displaying the code on the display screen. The terminal (20) includes； an image pickup portion for picking up an image on the display screen (13) that displays the code； an analysis portion for generating measurement data for transmission by analyzing the code that is picked up； and a transmission portion for transmitting, to the server (30), the measurement data for transmission. The server includes a memory portion for storing the transmitted measurement data for transmission.
