The invention relates to a gas pipe for a nasal-plug type respirator. The gas pipe is made of silicon material and comprises an annular wall that is arranged to surround an axis and capable of forming an inner hole. The annular wall, formed with a corrugated cross section, comprises a plurality of inner annular parts and a plurality of outer annular parts, wherein the inner annular parts are arranged to surround the axis the outer annular parts are arranged to surround the axis and intervally disposed between the inner annular parts the outer annular parts are far away from the axis compared to the inner annular parts and each inner annular part has a radially-corresponding first thickness and each outer annular part has a radially-corresponding second thickness less than the first thickness of the inner annular part. Accordingly, the gas pipe can provide preferable anti-deformation strength, capable of reducing deformation of the inner hole to assure normal gas transmission when the gas pipe is bent. The invention relates to a gas pipe for a nasal-plug type respirator. The gas pipe is made of silicon material and comprises an annular wall that is arranged to surround an axis and capable of forming an inner hole. The annular wall, formed with a corrugated cross section, comprises a plurality of inner annular parts and a plurality of outer annular parts, wherein the inner annular parts are arranged to surround the axis the outer annular parts are arranged to surround the axis and intervally disposed between the inner annular parts the outer annular parts are far away from the axis compared to the inner annular parts and each inner annular part has a radially-corresponding first thickness and each outer annular part has a radially-corresponding second thickness less than the first thickness of the inner annular part. Accordingly, the gas pipe can provide preferable anti-deformation strength, capable of reducing deformation of the inner hole to assure normal gas transm
