A manufacturing method of a hermetically sealed container, comprises steps of placing, on a first member, a first bonding material and a second bonding material having a larger compressibility in relation to a pressing force than a compressibility of the first bonding material, such that the first and second bonding materials are arranged side-to-side relationship, and the first bonding material has a height lower than a height of the second bonding material; pressing a second member to the second bonding material; heating and melting sequentially part by part the first bonding material; and cooling the first bonding material to bond together the first and second members.