PURPOSE: To provide an exhaust emission control device for a diesel engine which can reduce an exhaust gas pressure rise rate in the collection of particulates, is excellent in durability against thermal stress, can eliminate collected particulate at high efficiency, and is excellent in performance, reliability, and safety.

CONSTITUTION: An exhaust emission control device for diesel engine is provided with a metallic case 5, a ceramic filter 3 stored in the metallic case 5, and a vibration generator 10 of electromagnetic type, etc., to give vibration to the metallic case 5 so that the ceramic filter 3 can move in the metallic case 5.