It took 4 years for introduction and trial of mangrove Sonneratia apetala on the seashore of east Guangdong. The results showed that the area of introduction is north to its original and successful introduction in Zhangjiang, Shenzhen about 1°08'N, 2°22'N and 1°06' N. It has own characteristic of growth and ecological adaptability, and for its forestation and protection, the different technical procedures were required. We accomplished the introduction with 243.3 hm2, which becomed the largest, most north and most successful introduction of this kind of plant in our country. The forests were developing normally. Under suitable condition, its average height growth can reach 2.24 m after planted for one year. It would be 6 or 7 years earlier than the indigenous species to realize protective function. After planted for one year, the Sonneratia apetala flowers and bears seeds twice every year and regenerates normally. The forest that was planted in Sept. 1998 had regenerated 4 times. Moreover, both of its biological features, such as resistance, and its economics quality can keep nearly the same as its original.