The invention discloses a detection method of a fuel cell car hydrogen bottle valve status. The detection method specifically includes the steps that step 1, an order of be-about-to park or stop of hydrogen supply is transferred to a hydrogen management system through a vehicle controller of a vehicle; step 2, a fuel cell is controlled by the vehicle controller to continue working during the timeof parking or stop of hydrogen supply, the detection of a hydrogen bottle valve of a pipeline of the fuel cell is carried out at the same time, and the working condition of the hydrogen bottle valve of the pipeline is judged; and step 3, after the detection of the hydrogen bottle valve is completed, a pressure value of a high pressure pipeline is reverted to a value before detection, and the detection of the hydrogen bottle valve of the pipeline is completed; and the order of be-about-to park or stop of hydrogen supply transferred by the vehicle controller is waited, the detection of the hydrogen bottle valve of other pipelines of the fuel cell is orderly and circularly carried out, and the working condition of the hydrogen bottle valve can be judged. According to the detection method of the fuel cell car hydrogen bottle valve status, whether a bottle valve can be normally opened or closed can be judged, the fault of the hydrogen bottle valve can be timely detected, the usage of hydrogen is safer, and the fault rate of a car is reduced.