The invention relates to a detection-facilitating low-voltage power supply and distribution cabinet. The cabinet comprises an outer shell, wherein an installing base is fixed to one side of the outerwall of the outer shell, an installing column is fixed to the top of the installing base, an installing sleeve is connected to the installing column in a clamped mode, a rotary disk is arranged between the installing sleeve and the installing base, the rotary disk is fixed to the inner wall of the installing sleeve, a cabinet door is fixed to the outer wall of the installing sleeve, a limit blockis fixed to the top of the installing sleeve, the limit block is provided with a limit slot, a limit plate is connected to the limit slot in a sliding mode, the limit plate is fixed to the side wall of the outer shell, a strong magnet is arranged between the limit plate and the limit slot, and the strong magnet is fixed to the outer wall of the bottom of the limit plate. Through the arrangement ofthe installing sleeve, the cabinet door can be directly arranged on the installing column in a sleeving mode through clamped connection, so that installation and fixation of the cabinet door are completed, and the previous situation that screws need to be used for fixation, and consequently procedures are tedious is avoided.