The invention provides a positioning, navigating and locus plotting apparatus. The positioning, navigating and locus plotting apparatus comprises a shell and a human-machine interface arranged on the surface of the shell, and also comprises a CPU mainboard arranged in the shell, and an accelerometer, a gyroscope, an atmospheric pressure altimeter, an electron compass, a satellite signal reception module, a wireless transmit-receive module and sensing module interfaces for the switch-in of a gas sensor and an apparatus identifying module, which are connected with the CPU mainboard and are also arranged in the shell. The apparatus has a simple structure and a low price, can be used for ground positioning, navigating and locus plotting, can also be used for the positioning, navigating and locus plotting of places having no satellite signals and comprising mines, underground pipe networks and the like, can determine whether crossed mine mining is carried out or not in real time, and is a timely and effective crossing monitoring tool for mining industry resource monitoring departments, can be used for drawing a mine toxic gas distribution map and a mine apparatus distribution map, has the advantages of small size, light weight portability, use convenience, and no need of processional technologies and knowledge of users, and is suitable for large batch popularization.