Abstract: From September 2017 to January 2018， the experiment on artificial seedling technology， or so called triple flat method， for Malina clam (Ruditapes philippinarum) was carried out in diked tidal flats of A， B and C in Dongbi Island of Fuqing. The flats A and B were used for seedling cultivation and C for food cultivation. A total of 1 670 tons of Malina clam were put into the flats A and B in September 2017， and four largescale spawnings occurred during the seedling period of the parent clams. Results showed that the sperm and egg emission rates of parent clams were 32.00%-84.00% and the hatching rates were 45.00%-68.54%， respectively. The growth rates of planktonic larvae were 4.73-7.14 μm/d. The attachment metamorphosis rate was 28.37%-59.67%. The growth rate of juvenile shells was 7.08-25.10 μm/d. As results， 758.0 billion grainsize seedlings were cultivated with a survival rate of 50.23%. Therefore， the triple flat method in reclamation area could improve the biological feed supply， the growth rate and survival rate of seedlings．