The invention provides a money storage mechanism and a self-service device. The money storage mechanism comprises a cabinet, a cashbox and a first money inlet channel; the cabinet is provided with aninlet; the cashbox is arranged in the cabinet in a detachable manner, and comprises a box body and an opening arranged in the box body; the inlet of the cabinet is communicated with the opening of thecashbox through the first money inlet channel, the first money inlet channel is pivoted to the cabinet, and the first money inlet channel can rotate relative to the cabinet under the driving action of the cashbox. When the first money inlet channel is on an initial position, an inlet of the first money inlet channel is communicated with the inlet of the cabinet, and an outlet of the first money inlet channel is communicated with the opening of the cashbox. When the cashbox is pulled out or pushed into the cabinet, the cashbox can drive the first money inlet channel to deviate from the initialposition in order to eliminate interference between the cashbox and the first money inlet channel, the aim of reducing the impact force between the cashbox and the first money inlet channel is achieved, and therefore the case that the first money inlet channel or the cashbox is damaged is avoided, and the money storage mechanism is high in reliability.