Under the water temperature of 15.8 ~ 24.7 ℃, small size (shell length of 1.03±0.02 cm) and medium size (shell length of 1.57±0.03 cm) green disc abalone (GS -02 -003 -2018) (Haliotis discus hannai Ino♀×H. fulgens♂) were divided into 4 groups (A, B, C and D), and reared in a 240 × 170 × 285 mm aquarium with a volume of 8 L: in Group A the juveniles were fed with compound feed with a particle size of 165 μm at feeding rate of 2%, 3%, 4%, or 5%; in Group B the juveniles were fed with compound feed with a particle size of 198μm and 165μm mixed feed at the ratio of 1:0, 7:3, 5:5 or 3：7 at feeding rate of 4%; in Group C the juveniles were fed with compound feed with a particle size of 198μm at feeding rates were 2%, 3%, 4%, or 5%; in Group D the juveniles were fed with a mixed particle size feed of 245 μm and 198μm at the ratios of 1:0, 7:3, 5:5 and 3:7 at feeding rate of 4%. The effects of feeding rate and dietary particle size on the growth and survival were studied in juvenile abalone with different specifications. The daily growth of shell length (DLG), daily growth of body mass (WLG), specific growth rate of shell length (LSGR) and specific growth rate of body mass (WSGR) were measured for the growth. SPSS and Excel software were used for data analysis and mapping. The results showed that growth of the juvenile of hybrid abalone was significantly affected by the feeding rate of compound feed, with different effects of suitable feeding amount of different sizes on growth of juvenile abalone. The medium size juvenile abalone had suitable feeding rate of 3% and small size juvenile abalone had suitable feeding rate of 5%. The growth of the juvenile abalone was influenced by particle size of compound feed, and the best growth was observed in the small-size juvenile abalone fed with mixed particles of 198 μm and 165 μm at a ratio of 3:7, and the best growth was found in 245 μm and 198 μm mixed diet at a ratio of 1:0 in the medium size juvenile abalone. Survival rate was over 88.0% in the juvenile abalone in each experimental group. The findings indicated that the feeding amount and particle size of compound feed had an important impact on the growth of juvenile abalone with different sizes. Therefore, the appropriate feeding amount and particle size should be selected according to different growth stages in order to better growth and development of juvenile abalone.