The invention discloses a safe self-adjusting type double-gas-source pressure stabilizing valve, comprising an upper valve body (1) and a lower valve body (5), wherein the lower valve body is provided with a low-pressure gas source inlet (10) and a high-pressure gas source inlet (11) which are internally and respectively provided with a sealing rod (8). The safe self-adjusting type double-gas-source pressure stabilizing valve is characterized in that one end of the sealing rod (8) arranged in the low-pressure gas source inlet (10) is butt-jointed with a gas source joint (9), and the other endof the sealing rod (8) is contacted with one end of a supporting rod (7); the other end of the supporting rod (7) is sheathed in a valve rod (12) and is butt-jointed with an auxiliary pressure-adjusting spring (6); the other end of the valve rod (12) penetrates through a ventilating hole (13) to be connected with a leather membrane (3) which is pressed between the upper valve body (1) and the lower valve body (5); one surface of the leather membrane (3) positioned in the upper valve body (1) is butt-jointed with one end of a main spring (2); the other end of the main spring (2) is butt-jointed with a pressure-adjusting knob (14) which is rotatably arranged in the upper valve body (1) by threads; and the high-pressure gas source inlet (11) is also internally provided with a sealing rod (8), and is communicated with the ventilating hole (13) by an internal channel in the lower valve body (5). The safe self-adjusting type double-gas-source pressure stabilizing valve has the advantages ofsafety, material conservation and small volume.