The　world　pays　more　attention　to　biomass　(straw)　power　generation　due　to　its　good　power　quality,　friendly　environment　and　less　pollution.　The　paper　analyzed　the　characteristic　of　the　three　categories　biomass　power　generation,　further　more　the　comparative　analysis　of　its　economic　and　application　scope　were　carried　out.　It　shows　that　the　economics　of　biomass　co-combustion　power　generation　technology　was　the　best　one,　direct-fired　power　generation　technology　has　a　high　efficiency　and　the　unit　investment　and　it　is　more　reasonable　when　it　is　in　scale　operation;　gasification　power　generation　technology　has　the　virtue　of　less　investment,　low　generation　cost　and　good　flexibility;　the　investment　cost　of　co-combustion　power　generation　technology　is　less,　this　system　has　a　higher　efficiency.　©2010　IEEE.