The invention discloses a pumice composite type foaming agent. The technical scheme is characterized in that the pumice composite type foaming agent comprises powdered pumice, attapulgite pottery clay powder having an air purification function, hydrogen peroxide, N,N-dimethyldodecylamine-N-oxide, coconut diethanolamide, modified polyethoxylated silicone, polyether modified silicone oil and water; and paste ingredients of the pumice composite type foaming agent are stirred into a paste, and then the ingredients of the pumice composite type foaming agent are stirred and form a finished product of the pumice composite type foaming agent. The pumice composite type foaming agent has the characteristics that the foaming capacity and the expansion ratio are high, the foam amount per unit volume is large, foam holes are fine and uniform and are not prone to be crushed, the product demoulding speed is high, the surface smoothness is good, and the product later strength is high. The product produced by the pumice composite type foaming agent has the effects of heat preservation, heat insulation and sound insulation and a function of purifying the air; and the pumice composite type foaming agent is suitable for producing light weight boards and walls and noise reduction products.