To provide a protective suit for maintaining method, which can be worn by a wearer oneself and which does not prevent movement of the wearer.SOLUTION: A protective suit system for maintaining method 1 comprises: a protective suit 10 which is in an upper half body shape in which a lower end is opened for putting on and off, a lower end opening 15 is formed, which comprises a head cover 11, a body cover 12 and arm covers 13 and does not comprise a fastener, in which a visibility securing transparent part 20 is formed at least in a front face of the head cover 11, and which comprises an external-air introducing hole 21 for introducing external air into the protective suit 10, a through hole 22 for discharging air in the protective suite 10, and contraction parts 17 which are formed at the lower end opening 15 and are elastically brought into contact with a waist of a wearer; and external air introducing means 21 for introducing external air into the protective suite 10.SELECTED DRAWING: Figure 1
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