With　starch　and　NaOH,　CaO　as　raw　materials,　the　type　of　coal　gasification　catalyst　prepared　with　mixed,　the　effects　of　different　additive　ratio　on　the　viscosity,　mechanical　strength,　thermal　stability,　chemical　reactivity.　The　results　show　that　the　catalyst　can　improve　the　briquette　indicators,　play　a　good　catalytic　effect　on　the　gasification　of　coal　briquette,　in　10%　of　the　amount　of　catalyst,　the　effect　of　the　additive　is　used　in　an　amount　30%　optimal.　©　(2013)　Trans　Tech　Publications,　Switzerland.