Abstract: The feeding and the growth characteristic of larva and juvenile of Opsariichthys bidens were studied.The results showed that larva and juvenile of O.bidens were breeded under condition of water temperature 26~30℃.36.67% of the larva opened their mouth and started to feed after age of 3 days.The feeding rate of larva and juvenile was 100.00% after 5 days of age,the average rate of larva and juvenile in the full stomach was 99.20% after 6 days of age,and the relationship between feeding amount(y) and body weight(W) was calculated to be y=-0.000 4 W²+ 0.214 0W-0.200 8.The recommended dietary allowance of the larva and juvenile of O.bidens as 45%~50% of the body weight.The regression equation of total length(L_t) with day age(D) was expressed as L_t=-0.008 1D²+ 0.903 1D +4.159 5.The relationship between the body weight(W_t) and day age(D) was calculated to be W _t=0.075 0D² +2.027 1D -10.689 0,and total length(L_t) and the body weight(W_t) could be expressed to be W_t=0.001 3L^{3.609 8}_t,b=3.609 8,which showed that the growth of larva and juvenile of O.bidens belongs to the type of allometric.The results provided more references for the artificial breeding of O.bidens.