The invention discloses an installing support for a compressed air filter. The installing support for the compressed air filter comprises an installing plate and a bottom frame; the installing plate is provided with a machine body installing hole used for fixing the installing support to a machine body; a concave hole is formed in the middle position of the lower end head of the installing plate; the bottom frame comprises four vertically downward installing lugs; each installing lug is provided with a bolt hole; cutting is performed from the two sides of the middle portion of the installing plate to form the two installing lugs at the rear end; and after the lower end of the installing plate is bent forwards, the lower end head of the installing plate is bent downwards to form the two installing lugs at the front end. The installing support can lower the risk that the middle portion of the support is broken.