A vacuum adiabatic body is provided. The vacuum adiabatic body may include a first plate, a second plate, a seal, a support, a heat resistance device, and an exhaust port. The support may include at least two bars to support the first plate and the second plate. Each of the at least two bars may include a material having a lower emissivity than emissivities of each of the first and second plates, and each bar may be fabricated using at least one material selected from the group consisting of polycarbonate (PC), glass fiber PC, low outgassing PC, polyphenylene sulfide (PPS), and liquid crystal polymer (LCP).