A movable outwards extending operation platform comprises a bottom platform, a corner platform and an outwards extending operation platform; a vertical expansion bend is hinged between the bottom platform and the corner platform; a lifting top rod is connected between the vertical expansion bend and the bottom platform; a horizontal expansion bend is hinged between the corner platform and the operation platform; an outwards raised pull rod is connected between the horizontal expansion bend and the operation platform; both the horizontal expansion bend and the vertical expansion bend have rod piece rhombic hinging structures; double-limb rhombic frame bodies are connected in parallel to form a stereo rhombic telescopic structure; a safety rope is connected to one side of the bottom platform opposite to the operation platform; the safety rope passes through a suspension loop on the corner platform and the other end is connected with the back side of the operating platform; a ballast weight is installed at the same side of the bottom platform having the safety rope; and a ground truckle is connected to the bottom of the bottom platform. The movable outwards extending operating platform can be used for carrying out super-high and limb suspension operations; the safety requirement of construction can be satisfied; the limb operation risks of workers can be reduced; convenient and quick movable displacement can be realized; and convenience can be provided for workers carrying out construction.