A large number of porphyry deposits were formed in Tibetan Plateau as the result of collision between the India and the Lhasa plates. Three different porphyry deposit belts have been found in the Lhasa terrene. Combined with the regional tectonic-magmatic evolution, the authors concluded that the three stages of mantle-derived magmas underplating partial melting of lower-crust hypergenic emplacement of magma porphyritic mineralization system might have been controlled by various deep processes in the three periods of India-Eurasia continental collision. Various geodynamic models have been established by the authors for the three types of porphyry deposits within the continental collision setting.