The present invention relates to a premix for jewel bass. Said premix is formed from several vitamins and several mineral matters. The above-mentioned several vitamins contain VA, VD, VE, VK, VB1, VB, VB12, VB6, calcium pantothenate, nicotinic acid, folic acid, VC, choline chloride, inositol and defatted rice bran, and the described mineral matters include NazHPO4, CaH2PO4,KCl,MgSO4,FeSO4,ZnSO4,CuSO4,KI,CoCl2,MnSO4 and limestone powder. In the jewel bass feed the added quantity of above-mentioned premix is: every component is 1%. Said invention also provides the preparation method of said premix. Said invention can make growth speed of jewel bass be increased by above 10%, and the feed utilization rate also can be greatly raised.