A coating protective sheet that realizes excellent adhesion to even a coating tending to invite adhesion failure by the bleeding of a leveling agent, etc. without the need to carry out cleaning operation, etc., and that can maintain favorable adhesion condition for a prolonged period of time, and that even after long-time attachment, can be easily detached at the time of sheet detachment. The coating protective sheet is an adhesive sheet having, superimposed on at least one major surface of a support base material, an adhesive layer containing a rubber polymer and an aliphatic (meth)acrylic oligomer of 30 DEG to 100 DEG C glass transition temperature and 1000 to 2 10<4> weight average molecular weight, characterized in that the amount of (meth)acrylic oligomer added is in the range of 0.02 to 1 part by weight per 100 parts by weight of rubber polymer.