Abstract:There is enough evidence to prove that Mr. Sun Zhong shan was once challenged and obsessed by the idea of yellow peril. He, to some extent, had deliberated upon it and his attitude toward it had experienced three periods. General speaking, he thought that the idea of yellow peril was an excuse the European and American powers exploited which was intended to divide China and struggle for hegemony over Asia. Mr. Sun Zhong shan emphasized that China would open to the outside world after the revolution and meanwhile develop its economy to benefit not only the Chinese but also the whole human beings. During his later years, Mr. Sun Zhong shan persisted in anti imperialism, abolishing all unequal treaties, standing together with all oppressed nations and states and preserving human justice and world peace.