The invention provides a high-speed automatic traffic accident alarm system based on STM32 and belongs to the field of electronic equipment. The high-speed automatic traffic accident alarm system aims at achieving the purposes that the traveling condition before a traffic accident happens and the automobile position after the traffic accident happens can be automatically sent to a specific APP only by utilization of an intra-vehicle power source for supplying power, and a user takes a series of measures such as alarming. The high-speed automatic traffic accident alarm system based on STM32 can reduce casualties and property losses as small as possible. The high-speed automatic traffic accident alarm system is composed of an STM32 minimum system, a JTAG program debugging circuit, a GPS antenna and data processing circuit, an MPU6050 module hardware circuit, an SIM900A chip main circuit, an SIM card slot circuit, an SD card hardware circuit, a TFT liquid crystal display screen module hardware circuit, an OV2640 camera module chip main circuit, a USB interface and stabilized voltage supply circuit and a USB-to-serial-port chip PL2303 main circuit. The high-speed automatic traffic accident alarm system runs in a fully-automatic manner, any operation is not needed after the traffic accident happens, a video acquisition device and a central processing unit are connected, automobile coordinates are sent to the specific APP through a GPRS wireless network, a corresponding map is additionally arranged in the APP, the traffic accident position can be rapidly positioned by the user, and therefore the user can take measures such as alarming and ambulance calling better beneficial to injured persons.