Pressing device convenient to disassemble and assemble gas safety stop valve spring

A pressing device facilitating disassembly and assembly of a gas safety shut-off valve spring comprises a gas pipeline, a gas safety shut-off valve and a pressing device body, a pressing device flange plate is arranged at one end of a shell in the pressing device body, a shell end cover is arranged at the other end of the shell, a fixing nut is arranged on the shell end cover, and four guide columns penetrate through the shell end cover to be evenly arranged around an ejector rod. A mounting frame is arranged at one end of the ejector rod, a rotating handle is arranged on the mounting frame, a fuel gas safety stop valve flange plate is fixed to a pressing device flange plate, a spring is arranged between the fuel gas safety stop valve flange plate and a gland, a pull rod is fixed to the fuel gas safety stop valve flange plate, and the other end of the pull rod penetrates through the gland and is fastened through a locking nut. During disassembly and assembly, the flange plate of the pressing device and the fl