Crawler type shot blasting machine is suitable for surface rust removal or shot blasting strengthening of workpieces produced in large and medium batches with multiple varieties. The cleaning of workpieces must be collision resistant castings and heat-treated parts. Application scope of track type shot blasting machine: cleaning and polishing of die-casting parts, precision castings, precision forgings, etc. Remove surface oxide scale from heat-treated parts, castings, and forgings, strengthen springs, rust removal and pre-treatment of fasteners. This machine cannot clean workpieces with high temperature or burrs, otherwise it will damage the track. An automatic loading and unloading mechanism can be designed to reduce the labor intensity of workers and improve production efficiency.