Abstract: The ecological socialism emerging in the 1970s is a unique socialist theory with the core of the ecological benefit, the goal of the connections between the ecology and the socialism, dealing jointly with the problems of ecology, the society justice, non-violence and the democracy of the grassroots. The harmonious socialism is a trinity of scientific system covering the harmonious society, the market economy and the socialism. The discussion about relation between the ecology socialism and the harmonious socialism has an important theoretical and the practical significance in regarding and appraising the ecological socialism and constructing socialism with a firm socialist faith.