The objects of the present invention are to provide a packaging material of gas-bag type for packaging easily deformable parts or devices of office equipment or OA equipment having various sizes and shapes such as containers containing toner, containers containing developing agent, photoconductors, process cartridges, and complex units of a developer and a toner collector.In order to achieve the object, a packaging material of gas-bag type is provided which comprises tube-like bodies and connecting portions, wherein the tube-like bodies are able to swell by being injected inner gas, the connecting portions connect the tube-like bodies in parallel, the tube-like bodies are bendable so as to wrap an article to be packaged, and the packaging material is formed from substantially flat two sheets of one front sheet and one back sheet in a condition that the inner gas is substantially evacuated from the tube-like bodies.