Acrylic acid(AA) and hydroxyethyl methacrylate(HEMA) were grafted onto chlorinated polypropylene(CPP) via solution polymerization. The effects of the content of acrylate monomer and the content of initiator on the graft ratio were investigated. The optimum conditions of the graft reaction was that the content of the acrylate monomer was 20%(compared to the mass of CPP) ,the content of the initiator was 3%( compared to the total mass of CPP and AA and HEMA) and the graft ratio reached 8.81%.On the basis of the graft reaction, the grafted CPP was UV modified by methacryloyl chloride. The performance of emulsion ,the surface tension and the adhesion of series of waterborne UV curable CPP with different AA content were investigated. The results showed that stable emulsion was obtained when the content of AA was 20~50%(compared to the total mass of AA and HEMA), and the particle size of the emulsion decreased with the content of AA increased. After UV modified by methacryloyl chloride and after UV cure, the surface property was good ,the surface tension was 40 mN/m or more, the adhesion was improved. This material meets the environmental requirements and has good application prospect.