Air disinfection machine based on photocatalyst

The invention relates to an air disinfection machine based on a photocatalyst. The air disinfection machine comprises a disinfection box; a negative pressure adjusting assembly is mounted at the top of the disinfection box; the electrostatic dust collection assembly is installed on the outer wall of the side, away from the outer side frame, of the disinfection box, a photocatalyst filter screen is fixed in the disinfection box, and a back plate is arranged on the side, away from the disinfection box, of the outer side frame; symmetrical air inducing openings are formed in the inner wall of the outer side frame, an adjusting motor is installed on the inner wall of the outer side frame, and the periphery of an output shaft of the adjusting motor is sleeved with a rotating plate which can be driven by the adjusting motor to rotate to seal the air inducing openings in the corresponding directions. Under the action of the electrostatic dust collection assembly and the outer side frame, the air flowing direction ca