The utility model discloses a high altitude operation platform, including connecting the girder, it is 7 font structures to connect the girder head end, its afterbody is the shape of falling a T structure, it is provided with the platform skeleton to connect the girder below, platform framework top both sides respectively are provided with 1 operation platform, 2 be provided with 1 breach between the individual operation platform, 1 buckle space of formation between the platform framework top of breach below and the operation platform bottom surface, connect the shape of the falling T structure of girder afterbody and pass the back from the breach, buckle space department is gone into to the card, operation platform's edge is provided with the pull rod handrail, be provided with the handle on the connection girder. The utility model discloses a to connect 7 font head ends of girder and connect on the crane span structure that erects, the workman removes through the handle can carry out the work of erectting of die block on operation platform, and whole in -process need not set up the built -in fitting on the pier shaft, has avoided later stage cutting built -in fitting to cause the influence to the pier shaft.