The utility model relates to a clean observation device of outdoor table meter watch glasses. Its characteristics are: including the insulator spindle, install one belt pulley (2) respectively at the bottom and the top of this insulator spindle, install between these two belt pulley (2) drive belt (3) to still install crank (5) on belt pulley (2) of insulator spindle bottom, and on belt pulley (2) at insulator spindle top still the cover annular cleaning brush (1) is equipped with, wherein still install a pipe rather than the parallel (4) on the insulator spindle, install objective and install the eyepiece in its bottom at this pipe (4) top to constitute the periscope. The utility model discloses the device alleviates tour personnel's work load through to having installing additional, reforming transform of insulator spindle now greatly, has practiced thrift operating time, has improved work efficiency.