Two-stage reverse osmosis device

The embodiment of the utility model provides a two-stage reverse osmosis device and relates to the technical field of reverse osmosis. The two-stage reverse osmosis device comprises a reverse osmosis assembly, a gas-water mixed conveying part and a drainage shell, a bearing plate part is arranged at one end of the gas-water mixed conveying part, the drainage shell is communicated with the outlet end of a first reverse osmosis part or a second reverse osmosis part, a spray head is inserted into the gas inlet end of the first reverse osmosis part and the gas inlet end of the second reverse osmosis part, and the first reverse osmosis part and the second reverse osmosis part are communicated. High-pressure gas is injected into the first reverse osmosis part or the second reverse osmosis part through the spray head by utilizing the gas supply part, and the reverse osmosis membrane in the first reverse osmosis part or the second reverse osmosis part is pushed out and finally falls into the pushing frame; after the