Provided are an abnormal driving behavior determination method and apparatus, a device, a vehicle and a medium, which relate to the field of artificial intelligence and, in particular, to the field of computer vision and in-depth learning. A specific implementation includes: determining multiple arm keypoints of an arm included in an original image of a driving user; determining an arm bending angle of the driving user according to the multiple arm keypoints; and determining whether the driving user has an abnormal driving behavior according to the arm bending angle. In the present application, the arm bending angle of the driving user is introduced for characterizing a driving pose of the driving user so that the abnormal driving behavior of the driving user is determined according to the arm bending angle, providing a new manner for determining the abnormal driving behavior.