In　this　study,　detailed　activity　level　of　typical　sector　in　Chengde　in　2013　was　obtained　through　a　full-coverage　investigation.　A　comprehensive　emission　inventory　with　country-level　resolution　in　2013　was　developed　based　on　guide　of　atmospheric　pollutant　emission　inventory　and　updated　emission　factors.　Then,　the　emission　inventory　within　1　km×1　km　grid　was　generated　using　source-based　spastial　surrogates　including　population,　road　network　and　landuse　date.　Furthemore,　meteorology-air　quality　modeling　system　(WRF-CMAx)　including　Particulate　Source　Apportionment　Technology　(PSAT)　module　was　established　in　order　to　evaluate　the　impact　of　topical　sector　(e.　g.,　electric　power,　the　production　of　construction　materials,　the　metallurgical　industry,　etc.)　on　PM2.5　concentration　in　January,　April,　July　and　October　which　were　considered　as　the　representative　months　of　winter,　spring,　summer　and　autumn.　The　results　showed　the　total　emission　of　SO2,　NOx,　TSP,　PM10,　PM2.5,　CO,　VOCs　and　NH3　in　Chengde　in　2013　was　respectively　81　134　t,　72　556　t,　368　750　t,　119　974　t,　51　152　t,　1　281　371　t,　170　642　t　and　81　742　t.　Industrial　source　was　the　main　emission　contributor　of　SO2,　NOx,　CO,　VOCs,　accounting　for　89.5%,　51.9%,　82.5%　and　45.6%　of　total　emissions,　respectively.　The　major　emission　source　of　NOx　also　included　on-road　and　non-road　mobile　source,　respectively　accounting　for　26.7%　and　10.8%.　The　major　emission　source　of　TSP,　PM10　and　PM2.5　was　fugitive　dust,　accounting　for　76.7%,　65.6%　and　46.54%,　respectively.　Ammonia　emissions　from　animals　and　farm　accounted　for　67.1%　and　15.8%　of　total　emissions,　respectively.　The　numerical　simulation　result　showed　that　the　fugitive　dust,　the　others,　the　metallurgical　industry　and　boilers　industry　had　relatively　higher　contributions　to　PM2.5　concentration,　accounting　for　23.1%,　20.6%,　13.3%　and　11.2%,　respectively.　These　emission　sources　should　be　paid　more　attention　during　the　decision-making　with　respect　to　control　strategies.　©　2016,　Science　Press.　All　right　reserved.