The interlayer 13 includes at least one layer. For example, as shown in FIG. 3, the interlayer 13 can be constituted by three layers, namely a soft core layer 131 and outer layers 132 that are harder than the core layer 131 and between which the core layer 131 is interposed. However, there is no limitation to this configuration, and it is sufficient that the interlayer 13 includes a plurality of layers including the core layer 131 and at least one outer layer 132 disposed on the outer glass plate 11 side. For example, the interlayer 13 including two layers, namely the core layer 131 and one outer layer 132 disposed on the outer glass plate 11 side, or the interlayer 13 in which an even number of two or more of the outer layers 132 are disposed on each side of the core layer 131 so that the core layer 131 is disposed at the center, or the interlayer 13 in which an odd number of outer layers 132 are disposed on one side of the core layer 131 and an even number of outer layers 132 are disposed on the other side so that the core layer 131 is interposed therebetween can also be formed. Note that in the case where only one outer layer 132 is provided, the outer layer 132 is provided on the outer glass plate 11 side as mentioned above, which is for the purpose of improving the breakage resistance performance with respect to an external force from the outside of a vehicle or a building. Also, when the number of outer layers 132 is increased, the sound insulation performance is improved.