Study the different PVC,different waterborne epoxy curing agent,usage amount of anti-corrosive pigment,diferent EEW/AHEW,combination of rheological agent and different silane influence on the property of anti-corrosive and anti-sagging and so on.At last compare test the property with commercially products.Result show that 5%anti-corrosive pigment,3%polyamide wax,0.5%fumed silica,0.2%bentone,PVC=0.3,EEW/AHEW=1.2,and 1%epoxy silane oligomer could get a water borne epoxy coating with good anti-sagging property good anti-corrosive property and good application property,more better property than commercially products.