The utility model is an electric pneumatic valve comprising a stabilizing tube (1), an armature (23) inside the stabilizing tube (1), a fixing iron core (4) within a coil (3), a seal gasket between the coil (3) and a shell (6), and a push rod interference-fitting with the fixing iron core (4). One end of the push rod (20) is connected to the armature (23) in a flexible way, while the other end is connected to a right end of a seal seat (17) of a right cavity of a valve body (11). A left end of the seal seat (17) is connected to a valve rod (16), and a surface of the left end is provided with a seal part (9) fitting with a right flange (26) of a central cavity of the valve body in a sealing way. The seal seat (17) fits with an inner cavity of a plug (18) dynamically, and is provided with a seal ring (8). The plug (18) is in screw thread-connection with the valve body (11). A right end of a seal seat (14) of a left cavity of the valve body is connected with the valve rod (16), and a surface of the right end is provided with a seal part (10) fitting with a left flange (27) of the central cavity of the valve body in a sealing way. The seal seat (14) is positioned within an inner cavity of a screw plug (13) and fits with the inner cavity dynamically. Moreover, a spring is provided between the screw plug (13) and the inner cavity. The screw plug (13) is in screw thread-connection with the valve body (11), which is a two-position three-way valve or a two-position two-way valve. A stabilizing iron core (1) butts with the fixing iron core (4), and a magnetic ring is provided between the stabilizing iron core and the fixing iron core. A demagnetization gasket (21) is provided between the armature (23) and the fixing iron core (4).