A series of thermoplastic polyurethane with isophorone diisocyanate (IPDI), Poly-terephthalic acid-3-methyl-1,5-amyl glycol ester diol (TPA-1000), polyethylene glycol (PEG-2000) and diethylene glycol (DEG) were synthesized . The 20wt% lithium salt was added to prepare all-solid-polymer electrolyte (SPE). The results showed that with the decrease of TPA-1000 and the increase of PEG-2000 , the heat resistance of SPE increasing, the glass transition temperature decreasing, the tensile strength decreasing and the elongation at break increasing. The relationship between ionic conductivity and temperature was accorded with the Arrhenius equation. The electrochemical windows of SPE except for the pure PEG-2000 were all above 4.0V at 80 ℃. When TPA-1000 and PEG-2000 had a mass ratio of one to two (SPE4), the comprehensive properties of electrolyte was the best. The mechanical strength was 1.87 Mpa, the conductivity was 2.15?10-4 S cm-1 and the electrochemical window was 4.3V. The discharge of all-solid-state battery assembled with SPE4 can reach 150 mAh/g at 0.2 C under 80 ?C.