Integrated gas supply device

The invention provides an integrated gas supply device. The problems that a gas supply device of an existing air turbine rocket engine makes an engine low in integration degree, a sectional dimensionenvelope is large, and the performance of the engine is affected are solved. The device includes a fuel supply unit, an oxidizing agent supply unit, a protection unit and a stationary blade part, andfurther includes a shafting sleeve, a combustion structure part and a shell which are successively and coaxially arranged from inside to outside, the shell includes an inner ring shell, an outer ringshell and N hollow support plates arranged between the inner ring shell and the outer ring shell, the N hollow support plates are evenly distributed in the peripheral direction, the combustion structure part includes an annular injector and an annular body part, the protection unit includes an inner ring thermal protection piece and an outer ring thermal protection piece, the fuel supply unit includes a fuel valve arranged