The utility model discloses a detachable prefabricated steel body tower crane foundation, personally experience sth. Part of the body, assemble the steel body, I -shaped connection girder steel including the bottom steel, the steel of installing on the bottom steel body more than 1 of assembling is personally experienced sth. Part of the body, install I -shaped connection girder steel on assembling the steel body, just the bottom steel body passes through vertical bolt to be assembled steel body back and I -shaped to be connected the girder steel continuous. A detachable prefabricated steel body tower crane foundation, it can solve current tower crane foundation can not used repeatedly, cause the wasting of resources and environmental pollution scheduling problem.