The utility model provides a combined electrical apparatus installation room with dust removal function, it is including installing room body, indoor clean system and revolving door, indoor clean system installs on installing the room body, installation room body one side is equipped with the revolving door, revolving door inside is equipped with clean part, clean part is including dust pelletizing system and dust collecting system, dust removal system configuration is at the top of revolving door, and dust absorption system configuration is in the bottom of revolving door. The utility model discloses simple structure, convenient operation compares with the room of installation in the past, need not to establish a clean room more alone, has solved the clean loaded down with trivial details and clean scheduling problem not in place of operating procedure in the past.