The invention provides an environment-friendly-type polypropylene (pp) aerated plastics and a process for preparation, and the aerated plastics utilizes plastic projectile body to be basis material, a third monomer is led in to be auxiliary crosslinking agent to crosslink and control degradation products, aerated plastics section products are made by processing graft copolymerization and cross-linking reaction to polypropylene, and closely welding, openly welding, tabletting, and foaming to shape with compatibilizer, filling material, nucleating agent, cross linking agent and inflating agent. The invention modifies the shortcomings that the traditional homopolymerized polypropylene can not get higher breakpoint extension force, high melt intensity and viscosity to foam and shape in the process of thermal foaming and shaping. The polypropylene (pp) aerated plastics products which are provided by the invention have excellent fire-resisting property and little heat distortion degree, and the softening point is between 100 DEG C and 130 DEG C. The invention can be used for long term in the temperature scope, and the application area is wide, wastes can be recycled, and can be automatically degraded, and the invention has no pollution to environment.