PROBLEM TO BE SOLVED: To provide a method for replacing a glove port in a short time and at low cost after preventing leakage of a pollutant in a glove box. A method of replacing a glove port includes a first attachment step of attaching a first outer box and a first inner box to a glove panel, and a plurality of parts constituting the glove port on the first outer box side or the first inner box. A port removal process to remove to the side, a closing process to close the mounting opening with a closing plate, a first removal process to remove the first outer box and the first inner box, and a second outer box and a second inner box on the glove panel. A second mounting process for mounting the box, an opening process for opening the mounting opening, a port mounting process for forming a new glove port with parts in the second outer box and the second inner box, and a second outer box and a second. Includes a second removal step of removing the inner box. [Selection diagram] Fig. 6
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