Wiring board of outdoor machine, fixed plate and outdoor machine

The utility model relates to a wiring board of an outdoor machine, a fixed plate and the outdoor machine. The wiring board of the outdoor machine comprises a wiring board body, a first side plate and a second side plate. One end of each of the first side plate and the second side plate is respectively connected with the edge of the wiring board body. The other end of the first side plate is provided with a first inserting sheet. A first included angle is formed between the surface of the first inserting sheet and the surface of the first side plate. The other end of the second side plate is provided with a second inserting sheet. A second inclined angle is formed between the surface of the second inserting sheet and the surface of the second side plate. The surface of the first inserting sheet and the surface of the second inserting sheet are mutually parallel. The first inserting sheet and the second inserting sheet are identical in orientation so that an objective of independently installing the wiring board of the outdoor machine is achieved.