Abstract: Research developments of artificial intelligence in foreign countries were surveyed under five headings since its early beginnings up to the present time. 1. Brain and neural models. Studies related to brain and neural models were evaluated and their importance for the understanding of the nature of human and artificial intelligence was emphasized. 2. Thinking process simulation. The seeking for heuristics from human intellectual activities has been stressed for the realization of artificial intelligence. 3. Pattern recogniti on. Visual pattern recognition problems involving statistical and syntactic approaches as well as robot vision were specifically discussed. 4. Understanding natural language. A general outline was given for the developmental trends form the syntactic analysis in the late fifties to the memory models of semantic network and then to the conceptual dependence theory in the early seventies. 5. Intelligence robots. Description was made on the MIT, Stanford university, and some of the Japanese robots. Based upon the above review, the authors concluded with the Opinion that the study of artificial intelligence should be regarded as an interdisciplinary science of intelligence, and outstanding achievements were anticipated from the joint efforts by scientists flora different diseiplines.