A glass panel comprising: a pair of glass plates (1A, 1B) opposed to each other; a gap formed by a plurality of spacers being provided at a constant pitch (Pd) between the pair of glass plates (1A, 1B); and a periphery sealing material joining the pair of glass plates (1A, 1B) at a peripheral portion thereof so as to seal the gap in an airtight state, wherein one of the pair of glass plates has a suction hole penetrating in a plate thickness direction and for sucking gas in the gap, and a suction hole sealing metal material sealing the suction hole in a state in which the gap is depressurized, the suction hole sealing metal material has a first protruding portion formed on an atmospheric side around the suction hole, and a second protruding portion formed on a gap side around the suction hole, wherein the thermal expansion coefficient of the glass plate is smaller than that of the suction hole sealing metal material, and as seen in a thickness direction of the glass plate, a first contour which is an outermost edge of a first adhesion surface portion where the first protruding portion is in contact with an atmospheric-side surface of the glass plate, and a second contour which is an outermost edge of a second adhesion surface portion where the second protruding portion is in contact with a gap-side surface of the glass plate, are on an outer side of a third contour which is a gap-side hole edge of the suction hole, wherein the first contour is on an outer side of the second contour, enabling a confirmation of the condition such as presence/absence of a white haze by observing the first contact surface portion from the glass plate side where the suction hole is not provided, characterized in that the periphery sealing material is a metal material, and in that in a contact surface between the first protruding portion and the glass plate, a white haze poorly adhered part with no metallic luster is not adjacent to the first contour and the second contour at the same time. a pair of glass plates (1A, 1B) opposed to each other; a gap formed by a plurality of spacers being provided at a constant pitch (Pd) between the pair of glass plates (1A, 1B); and a periphery sealing material joining the pair of glass plates (1A, 1B) at a peripheral portion thereof so as to seal the gap in an airtight state, wherein one of the pair of glass plates has a suction hole penetrating in a plate thickness direction and for sucking gas in the gap, and a suction hole sealing metal material sealing the suction hole in a state in which the gap is depressurized, the suction hole sealing metal material has a first protruding portion formed on an atmospheric side around the suction hole, and a second protruding portion formed on a gap side around the suction hole, wherein the thermal expansion coefficient of the glass plate is smaller than that of the suction hole sealing metal material, and as seen in a thickness direction of the glass plate, a first contour which is an outermost edge of a first adhesion surface portion where the first protruding portion is in contact with an atmospheric-side surface of the glass plate, and a second contour which is an outermost edge of a second adhesion surface portion where the second protruding portion is in contact with a gap-side surface of the glass plate, are on an outer side of a third contour which is a gap-side hole edge of the suction hole, wherein the first contour is on an outer side of the second contour, enabling a confirmation of the condition such as presence/absence of a white haze by observing the first contact surface portion from the glass plate side where the suction hole is not provided, characterized in that the periphery sealing material is a metal material, and in that in a contact surface between the first protruding portion and the glass plate, a white haze poorly adhered part with no metallic luster is not adjacent to the first contour and the second contour at the same time.