Abstract: Although existing majority of researches about trans-national technology transference have emphasized on the characteristic of dynamic phases, the researches are lack of deep understanding towards phase choice mechanism of technology grantor and technology grantee, it is undoubtedly a bottleneck for research on trans-national technology transference. The technology transference from multinational corporate to host country enterprise can be viewed as the technological cooperation. To uphold respective benefit, however, two sides will apply the optimum strategy to acquire the object revenue. Based on this consideration, the mutual and alternate function of bilateral strategies are analyed and studied by using duplicated dynamic model on the basis of evolutional game theory. The research found that with rariance involving the cost for keeping technology under wraps, the loss of technological advantage, the technology study desire and ability of host country enterprises, the technology transfer degree of multinational corporation appears obvious strategic selectivity.