The invention belongs to the commercial vehicle performance test field and especially relates to a suspended commercial-vehicle integrated visual field testing device. The device is attached to a vehicle window glass fixing device through a powerful suction disc. A suspension rod, a universal adjustment structure and the like are adjusted to determine that a position of a laser emitter is superposed with an eyespot position of a driver. A laser irradiator uniformly sweeps the dots along an edge of a visible area in front of a cab and the edge of sight glass, and tested ground light spots forma track curve according to an irradiation sequence. Each curve combination divides surrounding areas of a vehicle to form a visible area and a visual field blind area according to a visual field category, and a vehicle comprehensive visual field performance map is obtained after correction. In the invention, installation and dismounting are convenient, a high model matching degree is possessed, and the device is suitable for visual field measurement of various commercial vehicles. A commercial-vehicle integrated visual field measuring function is realized. In addition to a front visual field,visual-field visual range measurement of a front-view mirror, a main rear view mirror, a wide-angle external view mirror, a blind compensation mirror and other indirect visual field devices is added.