According to the biological data of Protosalanx hyalocranius Abbott measured annully, this paper presents its growth properties, growth curves which are fit with Von Bertalanffy growth model and resources properties of the population.The following conclusion has been drawn: 1.Body length and body weight have relation to power function W=3.981·10^-6·L^2.9395,R=0.999。 2.The parameters of Von Bertalanffy growth formula are L_∞=219.86(mm), K=0.1469,t₀=0.33,W_∞=28.56(g)。 3.Age of growth inflection point is 7.64 month-age, while body weight equals to one-third of asymptotic weight.4.Considering growth properties of the icefish only, it is better that fishing season begins in the month of inflection point of month-age.