To avoid the high machine investment of shredder, and avoid the dangerous operation of the tire slitting machine and block cutting machine, this new design of fully automatic wasted tire cutting machine is invented. This new tire cutting machine owns such advantages as small investment (around USD25000 only), easier operation (anyone can run it without any training), safe to the operator, easier for maintenance, less electricity consumption (around 15 Kw/Hr), and high capacity (around 3000 Kg/Hr). The invent of this machine has done a great contribution to the tire recycling project, it is a best choice for any rubber crumb manufacturers.