| In order to study the impact of environmental and feeding factors on the distribution of rockfish Sebastes schlegeli in artificial reefs, using survey data on the environment and fishery resources of three reef areas in Shandong Province from 2017 to 2018. Using the mean of the coefficient of variation to divide the body length of the sample into 10 groups, each with a length of 33 mm, and using the Bray-Curtis similarity index to compare the similarity of the body length composition of rockfish in different regions; using detrended correspondence Analysis (DCA) and canonical correspondence Analysis (CCA) to describe The effects of environmental factors on the rockfish distribution of different body length groups; the composition of the food of rockfish was analyzed by using the stomach contents analyses . The results showed that the body length composition similarity index of Xixiakou and Changdao artificial reef area was 70.66%, Compared with Xixiakou and Changdao, the Qiansandao artificial reef area has a low similarity index with them, which is 54.94% and 59.46% respectively.; the distribution of rockfish with larger body type (299-365 mm) is more correlated with depth, WQI and chemical oxygen demand (COD), prefers live in a deep, nutrient-rich environment, small body type (35 - 200 mm) rockfish prefers environment with shallow depth and good water quality; small body length (200-365 mm), older (2-3 years old), mainly consume fish, shrimp and crabs, and the dominant bait is fish (IRI, %=65.94), small body length (35-200 mm), younger (0-1 year old) individuals mainly feed on shrimp and crab, the dominant bait is shrimps (IRI, %=45.69). According to the research in this paper, it is concluded that the application of juvenile-fish-protected artificial reefs in shallow water can provide shelter for juvenile fish; the concentration of fishing in deep water can reduce the bycatch of juvenile fish，then rockfish resources can be proliferated and protected.