Young mulberry silkworm larvae were reared on polythene sheet and paraffin paper as a bottom and cover during first three instars during spring and autumn season (2015). This investigation was carried out Department of Plant Protection, Faculty of Agriculture, Mansoura, University. Results recorded that using polythene sheet and paraffin paper as cover and a bottom have significant increase on These economical than control parameters. Also results showed that reared during spring was better than autumn season.