In　order　to　investigate　the　chemical　characteristics　of　aerosol　pollution　including　PM1　and　PM2.5　in　Handan,　the　offline　sampling　campaign　was　conducted　and　the　concentrations　of　total　water-soluble　inorganic　ions　(TWSI),　carbonaceous　components　(OC　and　EC)　were　analyzed.　The　average　concentrations　were　88.5　mu　g/m(3)　for　PM1　and　122　mu　g/m(3)　for　PM2.5,　and　the　corresponding　ratios　of　PM1　versus　PM2.5　on　non-pollution,　mild-moderate　pollution　and　heavy　pollution　were　0.67,　0.70　and　0.77,　respectively.　TWSI　and　OC　accounted　for　43.2%　and　15.4%　in　PM1,　41.8%　and　16.0%　in　PM2.5.　Secondary　components　in　PM2.5　and　PM1　increased　with　heavy　pollution,　SNA　(SO42-,　NO3-　and　NH4+)　was　enriched　in　PM1　but　SOC　(Secondary　Organic　Carbon)　was　more　enriched　in　PM1-2.5.　Furthermore,　for　evaluating　the　effect　of　aerosol　feedback　the　WRF-Chem　model　was　applied　to　identify　the　aerosol-radiation　interaction　of　aerosol　feedback　influence　on　the　PM2.5　concentration　and　various　meteorological　factors　in　Handan.　The　results　indicated　that　the　aerosol　radiative　effects　will　result　in　an　average　32.62%(36.18　W/m(2))　decrease　in　downward　short　wave　flux　at　ground　surface　(SWDOWN),　an　average　17.52%　(39.15　m)　and　0.16%　(0.44　K)　decrease　in　planetary　boundary　layer　height(PBLH)　and　surface　temperature　(T2).　The　wind　speed　at　10　m　(WS)　and　relative　humidity　(RH)　will　be　increased　by　about　4.16%(0.11　m/s)　and　1.89%　(0.78%),　respectively.