The present paper deals principally with a detailed comparative analysis of the length-weight relationship in 10 spawning shoals of the Large Yellow Croaker during their spawning season. The concept of length-weight relationship for species and the method of computation of length-weight standard regression for species are also discussed. The data used for the present paper were obtained from samples collected primarily for the purpose of studying its population structure and fecundity. These samples were collected in the years 1958-1960 from the main spawning grounds of the Large Yellow Croaker during its spawning periods.