According to the samples of Dosidicus gigas collected by Chinese squid jigging vessels during the investigation from 2007 to 2008 off the coast of Chile, the ratio of statolith maximum width (MW) to total length (TSL) as a indicator of statolith growth, the statolith growth impacted by sex maturity and individual size is analyzed by the analysis of variance. The results indicated that the ratio MW to TSL (MW/TSL) for female individual is closely related with gonad maturity, for the female squids with sexual maturity stage I to stage III, Stage II to stage III, here was a significant difference between their MW/TSL (P <0.05). However, for male squid there has no obviously relationship between MW/TSL and gonad maturity accordingly. The MW/TSLs for female squids with different mantle length (ML) group, group with ML 300-400mm to ML 500-600mm and Ml 600-700mm, group ML 400-500mm to ML 500- 600mm and ML 600-700 mm, exist significant difference (P <0.05). When the female individual grow from ML 400-500mm to ML 500-600mm, the MW/TSL increase rapidly and the difference was significant (P <0.01). For male squid, the MW/TSLs between ML 350-400mm and ML 400-500mm, ML 400-450mm and ML 450-500mm also exist significant differences (P <0.05), when the squid attain ML 400-450mm, the MW/TSL is the smallest. The studies have shown that sexual maturation and size of Dosidicus gigas have a obviously effect on its statolith growth, but the difference exist between male and female.