The utility model relates to an aerial working platform of setting on mobile crane davit belongs to high -altitude operation equipment technical field. An aerial working platform of setting on mobilecrane davit, aerial working platform sets up on the lug on mobile crane davit top, including work platform, revolving stage, driving oil cylinder and the connecting rod that sets up the guardrail, bracing piece one end is articulated with the revolving stage with the articulated other end of the connecting rod of being connected work platform, driving oil cylinder one end is articulated with the revolving stage with the articulated other end of connecting rod, the revolving stage sets up at the lug up end. The utility model discloses on current mobile crane's basis, set up aerial working platform, make mobile crane can take the people to carry out high altitude construction, richened mobile crane's function, reduced engineering on -the -spot large car's quantity, improved work efficiency.The utility model discloses adjustment aerial working platform's that can be convenient spatial position, it is good that this aerial working platform synthesizes performance.