Garbage bag treatment device and wet garbage treatment device arranged in garbage bag

The utility model discloses a garbage bag treatment device and a wet garbage treatment device arranged in a garbage bag, and belongs to the field of garbage treatment. The garbage bag treatment device comprises a base, a supporting rod rotationally connected to the base, a first motor fixed to the base and used for driving the supporting rod, a control arm connected to the supporting rod, a second motor fixed to the supporting rod and used for driving the control arm, and a workbench rotationally connected to the control arm. The third motor is fixed to the workbench, the bag clamp is fixed to a third motor shaft, the bag clamp comprises a clamp body, a movable left clamp body and a movable right clamp body, and elastic components are connected between the left clamp body and the clamp body and between the right clamp body and the clamp body so as to clamp a garbage bag. The wet garbage treatment device installed in the garbage bag comprises a machine shell, a bag breaking and chopping mechanism, a dewatering