Co-thermochemical　conversion　of　municipal　solid　waste　blends　with　coal　has　the　advantage　of　diversifying　energy　resources　and　decreasing　consumption　of　fossil　fuels.　As　the　initial　and　fundamental　stage　of　co-thermochemical　conversion,　co-pyrolysis　of　municipal　solid　waste　and　coal　has　important　influence　on　performance　of　the　further　co　combustion　or　co　-gasification　process.　In　this　paper,　gaseous　product　distributions　during　co-pyrolysis　of　platanus　wood　(wood　waste　from　urban　roadside　trees　platanus　acerifolia)　and　two　different　rank　coals　(Shenmu　bituminous　and　Pingzhuang　lignite　from　northwestern　China)　were　investigated　through　a　semi-batch　type　drop　tube　furnace　at　different　temperatures.　The　platanus　wood/coal　blends　were　fed　into　the　furnace　with　five　different　mass　ratios　of　100/0,　70/30,　50/50,　30/70,　and　0/100.　The　gaseous　products　(H-2,H-　CO,　CO2,　CH4　and　light　hydrocarbons)　were　continuously　collected　and　then　determined　by　gas　chromatography.　Experimental　results　indicated　that　the　gaseous　product　distributions　from　pyrolysis　of　the　platanus　wood　and　coal　blends　were　significantly　affected　by　the　temperature,　the　platanus　wood/coal　mass　ratio　and　coal　type.　Compared　the　experimental　results　with　the　calculated　values　obtained　from　individual　samples　based　on　weighted　average,　some　signs　about　positive　or　negative　synergistic　effect　were　observed　on　the　formation　of　the　major　gas　composition.　The　synergistic　effect　could　probably　be　caused　by　the　secondary　reactions　between　volatiles　and　chars.　In　addition,　the　coal　rank　appeared　to　have　different　influence　on　the　synergistic　effect　between　platanus　wood　and　coal　during　co-pyrolysis　process.