Manual supercharging device for reverse osmosis filter element

The utility model discloses a manual supercharging device for a reverse osmosis filter element, which comprises a shell, and a water inlet, a water inlet channel, a water inlet cavity and a water outlet which are communicated with one another are sequentially arranged on the shell. The shell further comprises a check valve assembly arranged in the water inlet channel, a pressurization assembly arranged in the shell and a water guide channel arranged between the water inlet channel and the pressurization assembly, and the water guide channel communicates with the water inlet channel. The check valve assembly comprises a first check valve, a second check valve and a connecting piece arranged between the first check valve and the second check valve, the first check valve is close to the water inlet, the second check valve is close to a communicating port of the water inlet channel and the water inlet cavity, and the communicating port of the water guide channel and the water inlet channel is located between the