The invention relates to the machinery field, to be specific, relates to an electrical cabinet. A modularization assembly type electrical cabinet comprises the electrical cabinet, which comprises a housing, and the housing comprises an electrical cabinet support, which is fixedly provided with at least six steel plates by bolts and nuts in a detachable manner. A drawer box body is disposed in the housing, and a switch group is disposed in the drawer box body. A drawer track is disposed in the middle and upper part of the electrical cabinet support. The drawer box body is used as the first support, which is connected with the electrical cabinet support by the drawer track. A plurality of users can adjust a part of the power supply unit or replace a part of the unit, and then the switch group is connected with the cabinet body by the drawer tack, and therefore during the replacement, the users can pull the switch group out, and replace the unit to be replaced, and the operation of the users is facilitated.