Foundation for bearing upper load on hollow floor slab and construction method thereof

The invention discloses a foundation for bearing an upper load on a hollow floor slab and a construction method of the foundation. An I-shaped steel foot pad is arranged on a hidden beam of the hollow floor slab; the newly-built I-shaped steel beam of the I-shaped steel foot pad is arranged on the hollow floor slab in an overhead mode, loads are guided to the hidden beam portion of the hollow floor slab, and the loads are prevented from being directly transmitted to the hollow floor slab. The stress part is changed by arranging the foot pads, the load is transmitted to the hidden beam of the original structure, and the limitation that a hollow floor slab cannot bear a large bearing component is effectively solved; after the original structure is subjected to stress analysis and calculation, the foundation can be erected, the operation platform can be installed, the original structure is not damaged, and the construction difficulty increased by newly adding a permanent structure is not needed. Construction is