Results of this study based on three field surveys have been carried out during rainy, transition and dry season from 2009 to 2010 in Hai Van - Son Tra area, Thua Thien Hue province. A total number of 4296 fish eggs and 628 larvae were collected in 13 stations. Initially identified 10 genus, 39 family and 6 order. The densir of fish egg and larval fluctuate seasonally, in dry season, the density per 100m is higher than that in rainy season. The density of fish egg and larvae also distribute unequally among the survey stations. Some coral reef in the Northwest of Son Tra Island, Hon Mieu, Sung Rong Cau and Bai Chuoi can be seen as spawning and breeding grounds, that is the basis of proposals set core areas of marine protected areas to manage spawning ofreeffish to sustainable development of coral reeffish resources in Hai Van - Son Tra are.