Quality changes and shelf-life of Antarctic krill were investigated by testing the indexes of dressing percentage,chemical(pH,TVB-N,TBARS,Ca² -ATPase activity)and sensory evaluation at the frozen temperature(-8,-18 and -28 ℃).The results showed that sensory evaluation of Antarctic krill obtained significant correlations with frozen time and frozen temperature(r=0.982 and 0.981 respectively),sensory evaluation was unaccepted on 20^th day at -8 ℃,75^th and 120^th day were unacceptable for -18 and -28 ℃ respectively.Dressing percentage exhibited significant correlations with frozen time(r=0.953), dressing percentage were 31.62%,31.21% and 34.52% at the end of the shelf-life (sensory evaluation unaccepted)at -8,-18 and -28 ℃,respectively.No significant correlations were found between pH and frozen temperature,and pH, consequently,was not considered as the suitable parameter for reflecting quality changes of Antarctic krill under frozen storage.However,pH increased as time extended, pH got 7.94,7.99 and 7.84 at the end of shelf-life respectively.Significant correlations were obtained between TVB-N,TBARS and frozen time(r=0.944 and 0.935), whereas,only frozen temperature at -8 ℃ has good correlations when TVB-N, and frozen temperature at -18 and -28 ℃ attained strong correlations with TBARS,TVB-N and TBARS reached 21.43,20.49,19.74 mg/100 g and 0.88,0.78,0.66 mg MA/kg at the end of the shelf-life at three frozen temperatures respectively.Those results were lower than the limitation.Ca² -ATPase activity decreased sharply with significant correlations with frozen time(r=-0.929).Changes of sensory evaluation,dressing percentage,TVB-N,TBARS and Ca² -ATPase activity were sensitive and had significant correlations with frozen time,therefore they could be considered as right testing indexes for Antarctic krill at frozen temperature.So shelf-life of Antarctic krill at three frozen temperature,based on the testing indexes and sensory evaluation,was estimated at 20,75 and 120 days respectively during the whole study.