The invention discloses a driving behavior analyzing system. The driving behavior analyzing system comprises a driving information collecting module, a vehicle surrounding environment collecting module, a driver fatigue extent measuring module, a data recording and analyzing module, a judgment module, an alarming module and an evaluating module. The driving information collecting module, the vehicle surrounding environment collecting module and the driver fatigue extent measuring module are all connected with the data recording and analyzing module, the other end of the data recording and analyzing module is connected with the judgment module, and the other end of the judgment module is connected with the alarming module and the evaluating module. According to the driving behavior analyzing system, driving data are analyzed to measure the driving behavior of a driver, the driving behavior of the driver is evaluated accordingly, the driving behavior of the driver can be analyzed on thebasis of the driving environment, correct guiding is made for the driver, misguiding is avoided, meanwhile the driving behavior of the driver is improved, and the oil consumption of a vehicle is reduced.