Separated virtual reality all-in-one machine and use method

The invention discloses a separated virtual reality all-in-one machine and a use method, and the separated virtual all-in-one machine comprises a head device which comprises a display screen, a first sensor and a first camera for obtaining the viewpoint position of a wearer; the neck device is connected with the head device and comprises a neck body, a controller arranged on the neck body and at least three second cameras arranged in a scattered mode, and the controller is configured to determine the posture of the wearer according to the first sensor, obtain the viewpoint position of the wearer according to the first camera and send the viewpoint position to the head device; and in response to the posture of the wearer, performing parallax conversion on the shot content of each second camera according to the viewpoint position to obtain playing content, and displaying the playing content on a display screen. According to the embodiment of the invention, the second camera is arranged on the neck body, and par