The invention discloses a deep well precipitation waterproof construction method of a waterproof design-free basement, comprising the following steps of: excavating a plurality of deep wells with the depth reaching a bed rock strongly-weathered layer on the periphery of the basement as channels for releasing the pressure of underground water; reducing the pressure of the underground water on a base plate of the basement by utilizing the water-repellent performance of clay; drilling an observation hole at the free point of the base plate of the traditional basement; deciding to directly construct the waterproof layer or infuse cement slurry on a crushed gravel course in a low-pressure slow injecting mode according to the condition that whether the water-repellent performances of various layers of clay on the base plate of the traditional basement sufficiently exert actions or not; further reducing the pressure of the underground water and simultaneously increasing the weight of the base plate of the basement so as to improve the structural strength of the base plate of the traditional basement to resist the water pressure; and after the upper surface of the base plate of the basement is dried, constructing on the waterproof layer and a protection layer according to the conventional method. The method is suitable for the precipitation waterproof construction of the basement withfavorable water permeability in the bed rock strongly-weathered layer or a pebbly sand layer in the geologic report, has no damages to the traditional structure and meets the requirements of buildingenergy saving, economy and practicability.