This paper applies Bain’s market structure classification, analyzes the market structure, industry market concentration degree and the entry barriers in Ningde breeding habitats area, and it identifies the large yellow croaker breeding industry market structure in Ningde. The results show that: Ningde farmers’ market concentration index of CR4 is 0.87%, the degree of market concentration is very low at Ⅵ atomic type hardly exists concentration; more than 20 large enterprises’ CR4 is about 12.55%, also the Ⅵ atomic type; market competition is tense, it is close to the completely competitive market; the industry entry barriers are low. The basic conclusions are: the origin breeding market of internal industry presents lower concentration (Ⅵ atomic type), so that improving the industry concentration degree is necessary; due to the completely perfectly competitive market, we should control the excessive competition in order to improve the resources allocation efficiency; the weakness of barriers to entry is the leading cause of low concentration and the complete competition market structure.