The invention discloses an exhaust gas purification environmental protection device, which comprises an air inlet, a vent pipe, a detachable filter device and an air outlet, wherein a fan is fixedly arranged at the right end of the air inlet through the vent pipe, and the detachable filter device is fixedly arranged in the vent pipe at the right side of the fan; a sterilizing chamber is fixedly arranged at the right end of the detachable filter device through the vent pipe, and the right end of the sterilizing chamber is fixedly connected with a spraying chamber through the vent pipe; a heating chamber is fixedly arranged below the spraying chamber through the vent pipe, and a serpentine heating pipe is fixedly arranged in the heating chamber; the left side of the heating chamber is fixedly connected with a catalysis chamber, and the left side of the catalysis chamber is fixedly connected with an activated carbon layer through the vent pipe; the air outlet is formed in the left side ofthe activated carbon layer. The exhaust gas purification environmental protection device has the advantages of reasonable design, novel structure, and convenience in use; the harmful gases generatedafter the burning of the new energy can be effectively purified, and the harmful gases are prevented from being discharged into the air, so that the environment can be well protected.