A series of epoxy resins were synthesized with poly (1,4-butanediol adipate) polyol (PBA), isophorone diisocyanate (IPDI), dimethylolpropionic acid (DMPA), 1,4-butanediol (BDO), hydroxypropyl terminated poly (dimethylsiloxane) (PDMS) and epoxy resin (E-51) as monomers, triethylamine (tea) as neutralizer and ethylene diamine (EDA) as post chain extender Modified silicone containing self extinction waterborne polyurethane resin emulsion. Particle size analyzer was used to measure the particle size of the emulsion, FTIR to characterize the surface structure of the film, SEM to observe the surface of the film, and the properties such as gloss, water contact angle and thermodynamics of the film were analyzed. The results show that under the condition of n (PBA): n (PDMS) =1:2, When the mass fraction of E-51 is 5 %, the emulsion size is 1152 nm, the 60? gloss of the film is 3.4, the water contact angle is 107.3?, the tensile strength is 24.42 MPa, the elongation at break is 362 %, the thermal decomposition temperature at 50 % mass loss rate, compared with the unmodified polyurethane film, is increased by 18.3 ℃ ．