In　order　to　improve　the　quantization　quality　of　the　excitation　gains　in　ACELP　speech　coder,　we　present　a　general　method　for　establishing　the　gains　codebook　in　widely　used　ACELP　speech　coders.　This　method　can　be　applied　to　ACELP　speech　coder　at　any　bit　rate.　Experimental　results　show　that　the　performance　of　6　bits　gains　vector　codebook,　which　is　established　by　the　purposed　method,　is　equal　to　that　of　8　bits　gains　scalar　codebook.