Abstract: The present invention relates to a biaxially oriented polyolefin multilayer heat shrinkable film, which is a multilayer heat shrinkable film with at least three laminated layers, and has internal and external surface layers of a resin composition comprising 70-80 wt % of an ethylene-norbornene copolymer having a glass-transition temperature (Tg) of 138° C. and a norbornene content of 76 wt %, and 20-30 wt % of an ethylene-propylene random copolymer having a melting point (Tm) of 140° C.; and a core layer comprising 54 wt % of an ethylene-propylene random copolymer having Tm of 140° C., 8 wt % of an ethylene-butylene random copolymer having Tm of 66° C., 20 wt % of an ethylene-norbornene copolymer having Tg of 78° C. and norbornene content of 65 wt %, and 18 wt % of a hydrogenated petroleum resin having softening point (Ts) of 140° C.