To provide a heat-insulating panel contributable to the enhancement of yield strength, earthquake resistance, durability, fire protection, and fire resistance while forming a heat-insulating layer in a building, easy to manufacture and excellent in the execution of works and workability, and considering the health of the users and residents.

A heat-insulating panel is made up of a base plate 5 in which an intermediate layer 6 making a principal component of an inorganic foaming agent and added with a binder is laminatedly formed and integrated between an upper layer 7 and a lower layer 8 making a principal component of mineral fibers and inorganic power and formed by adding a binder and a heat-insulating member 1 arranged on one side of the base plate 5. The heat-insulating member 1 is that in which the core material 2 consisting of a heat-insulating material is sandwiched between a sheet-shaped surface material 3 and a rear face material 4.