Abstract: Professor Guo was born in 1915 and is 90 years old now bearing his brilliant scientific life. He made great contributions to the earth sceinces of China including identification of the existence of the Proterozoic Jiangnan island arc and trench system, establishment of the plate tectonic framework of southeastern China expressed in the continental crust growth through continental collision and terrane accretion from Proterozoic through Early Paleozoic, Late Paleozoic to Mesozoic from northwest to southeast, proposition of eight criteria to identify the paleo-trench-arcback arc basin system on the continent, and demonstration of marginal sea and their evolution model from origin to collaps and extinction. Professor Guo approached fruitful results in scienfific research and teaching work, being a paragon of virtue and learning. He has noble character and high prestige, exhibiting the characteristic style of great scholar master.