To　meet　the　practical　require　on　wastewater　treatment　process,　some　improvements　were　made　on　the　international　accepted　activated　sludge　model　ASM1　so　as　to　gain　a　simplified　model　which　can　reflect　the　output　of　water　quality　parameters,　and　then　a　dynamic　simulation　system　of　activated　sludge　process　was　established　based　on　the　model　by　LabVIEW.　The　system　has　abundant　information　and　is　convenient　to　use.　The　results　of　simulation　on　some　key　water　quality　parameters　show　that　the　simulation　system　is　effective.