The invention discloses a personnel positioning apparatus based on a WiFi mobile terminal. The personnel positioning apparatus based on a WiFi mobile terminal is mainly formed by an RTK (Real-time kinematic) difference 
base station and a WiFi mobile terminal, wherein the RTK difference 
base station mainly includes an RTK difference positioning module, an MCU1, a WiFi module 1, a GPRS (
General Packet Radio Service) module, an MEMS (Micro-Electro 
Mechanical System) inertial navigation module 1, an 
ethernet port module, and a power supply module; the RTK difference positioning module, the WiFi module 1, the GPRS module, the MEMS inertial navigation module 1, the 
ethernet port module, and the power supply module are connected with the MCU1; the RTK difference positioning module is connected with the GPRS module; the WiFi mobile terminal mainly includes a 
GPS positioning module, an MCU2, a WiFi module 2, an MEMS inertial navigation module 2 and a 
lithium battery power supply module; the 
GPS positioning module, the WiFi module 2, the MEMS inertial navigation module 2 and the 
lithium battery power supply module are connected with the MCU2; and the 
GPS positioning module is connected with the WiFi module 2. The personnel positioning apparatus based on a WiFi mobile terminal integrates a high precision 
satellite positioning technology with a 
data transmission technology and utilizes an 
integrated circuit technology, so that high precision and 
miniaturization of the personnel positioning apparatus can be realized, and can satisfy the requirement for portability of equipment, and accuracy and timeliness for personnel positioning.