Pinus tropicalis, P. echinata, P. elliottii and P. latteri are fastgrowing pine trees in the tropical and subtropical regions. They are introduced and growing well in Zhanjiang Prefecture, Guangdong Province. A comparison is made among the wood anatomical-mechanical properties of 20-year-old P. tropicalis, P. elliottii, P. latteri and 10-year-old P.echinata grown on the same site. The results of this study show that they all belong to the hard pine group and the properties of the former 20-year-old pines are better than that of the latter 10-year-old one (P.echinata). These four pine species can be used for paper making before 15 years old and the mature trees can be used just like the hard pines native to China. Besides, they can be considered as resin-tapping trees suitable to develop in South China.