A system for automatically embedding behavior collection components into a mobile device application; the system includes a user interface module, a recording module, a marking module, and an embedding module. The user interface module provides an operation interface which includes tracking items. The tracking items correspond to behavior collection components. The behavior collection components transmit operation information of the mobile device to a server. The recording module records relational information respectively corresponds to each of the behavior collection components, and each relational information is a relational function selected from of a plurality of relational functions of a library. The marking module determines and marks embedding positions of the behavior collection components in the mobile device application based on the behavior collection components of the selected tracking items and relational information thereof. The embedding module embeds the behavior collection components of the selected tracking items into the marked embedding positions.