Abstract: The paper aims at solving the problem from the viewpoints of theory and practice, which the people living in Panyu, Guangdong Province has been concerned with, i.e. “whether the vast extent of local tidelands can be used in constructing the ecological and public welfare mangrove plantation system or not?” and puts forward the rational suggestions in course of construction. First, it is proved from many theoretical points that constructing mangrove plantation in large scale can be won success in Panyu, and second, the conclusion is examined by a trial that are concerned with 4 mangrove species planted in 3 sites, 14.2 km long of dikes and 13.7 hectare of areas in total. The result shows that the practical examination corresponds to the theoretical conclusion basically. The survival rate and growth of above species are no less than that of the same species in main mangrove distributive areas of China. The better species for developing mangrove plantations in Panyu are Sonneratia apetala Buch.-Ham, Kandelia candel(L.) Druce and Bruguiera gymnorhiza(L.) Lam, and the altitudes of tideland suitable for their living are more than -0.8 m, -0.74 m and -0.43 m separately comparing with the local mean sea level. The paper can be used as a decision-making guideline for constructing mangrove plantations in Panyu by the local governments and organizations, and at same time, can be a reference for spreading mangroves in all areas of Pearl River Delta.