Aiming at the safety problem of rash entry in the process of high frequency and long time dynamic test in rail vehicle production base, a new infrared anti-rash entry system is developed. According to the principle of infrared alarm, infrared transmitting and receiving devices are symmetrically installed on both sides of the vehicle dynamic test line. The infrared signal reception will be interrupted when the vehicle intrudes unlawfully, thus triggering the alarm device installed in the vehicle cab, triggering the electrical signal and transmitting it to the vehicle undergoing dynamic test, and issuing the command to start the vehicle emergency braking system, so as to ensure the safety of operation. The system solves the safety problems caused by human uncontrollable, equipment signal error, external interference and other factors. Meanwhile, the system is simple and reliable with low cost and convenient for long-term maintenance in the later period.