A paint mist intercepting apparatus provided by the invention comprises a cabinet, the cabinet comprises a gas inlet end and a gas outlet end, a spraying device and an intercepting device are arrangedin the cabinet, the inside bottom of the cabinet is filled with a circulating liquid, a circulating device connected with the spraying device is arranged at the lower side of the cabinet, the intercepting device comprises a front supporting plate and a rear supporting plate which are fixed in the cabinet, an impeller assembly positioned between the front supporting plate and the rear supporting plate, and a motor used for driving the impeller assembly, the impeller assembly comprises a wheel disc, n mounting plates fixed on the wheel disc, and blades fixed on the mounting plates respectively,n is an integer more than or equal to 3, an included angle between the blades and the wheel disc is a, and the a is equal to or more than 20 DEG and equal to or less than 75 DEG. The paint mist intercepting apparatus has the advantages of simple devices, low manufacturing cost, high paint mist removal efficiency and excellent paint mist removing effect.