The liner for double-based propellant was prepared from HTPB,toluene diisocyanate,diisooctyl sebacate,1,4-butanediol and mica. The effects of dosage of each material on the properties of bonding and mechanical were studied. The stability of the liner was carried out by aging test at 70 ℃. The grains were coated by the liner and were tested in motor at high and low temperature separately. Results show that the bonding and mechanical properties of the liner can be affected by changing the dosage of toluene diisocyanate,diisooctyl sebacate,1,4-butanediol and so on.