Abstract: This experiment was conducted to analyze general nutrional components, the amino acid and fatty acid composition of dorsal muscles of four Pseudosciaena crocea genealogies such as Daiquyang， Guanjingyang， their positive cross， and negative cross genealogies.It showed that there was no significant difference(P>0.05) of protein and ash among the four genealogies.The fat content of negative cross genealogy had significant differences compared with Daiquyang,Guanjingyang and the positive cross genealogies.The Guanjingyang genealogy had the highest fat content(13.51%),while the negative cross genealogy had the lowest fat content(10.59%).The water content was inversely proportional to the fat content. The water content of negative cross genealogy compared with Daiquyang,Guanjingyang and positive cross genealogy also showed significant difference.The content of total amino acid of Daiquyang,Guanjingyang and their positive cross,negative cross genealogies was 57.83%±1.19%, 54.45%±1.01%,54.80%±2.97% and 58.39%±0.71% respectively.There was significant difference of total amino acid content of Daiquyang and negative cross genealogies compared with that in Guanjingyang genealogy (P<0.05).The content of essential amino acid was 30.08%±0.52%,28.05%±0.35%,28.40%±1.76% and 29.97%±0.41% respectively.The difference of essential amino acid content of negative cross and Daiquyang genealogy compared with the Guanjingyang genealogy was significant(P<0.05).The content of taste-related amino acid was 24.56%±0.26%, 23.45%±0.24%, 22.88%±0.61%and 25.39%±0.11% respectively,and the difference between negative cross and the other three genealogies was significant (P<0.05). In addition, the negative cross genealogy had the highest content of PUFA and DHA in the four genealogies and the difference was significant (P<0.05). The difference of EPA content between Daiquyang amd the positive cross genealogy was significant (P<0.05). These results suggested that the negative cross and Daiquyang genealogy were superior to other two genealogies based on general nutrional components, amino acid and fatty acid. It showed that the difference of nutritional components of dorsal muscle among the four genealogies may attribute to parental inheritance when they are cultured under the identical conditions. Combined with improving culture environment and nutritional compositions of diet,the quality improvement of Pseudosciaena crocea could be realized by genealogy selection.