The crawler shot blasting machine uses high-strength and wear-resistant rubber crawlers or manganese steel crawlers to load workpieces. It uses a high-speed rotating impeller to throw projectiles onto the workpiece in the chamber to achieve the purpose of cleaning. It is suitable for sand cleaning, rust removal, scale removal and surface strengthening of small castings, forgings, stamping parts, gears, springs and other parts. It is especially suitable for cleaning and strengthening parts that are not afraid of collision.