The invention discloses an apparatus for measuring the foundation pressure distribution of a concrete spread foundation, and a production method thereof. The apparatus comprises soil box side surface supports, a soil box bottom surface support, soil box side plates and a soil box bottom plate, wherein the four end surfaces of the soil box bottom plate are respectively provided with the soil box side plate so as to form a groove-shaped structure, the groove-shaped structure is filled with foundation soil so as to be used as a bearing layer, the soil box bottom plate is provided with the soil box bottom surface support, the soil box side plate is provided with the soil box side surface support, and one of the soil box side plates is provided with a soil discharging hole. According to the present invention, the apparatus has advantages of short production time, detachability, small occupation, convenient soil replacement and light weight, so the apparatus can move freely and cannot occupy the soil permanently; the apparatus can support the installation of the counterforce device, so the test process can be substantially accelerated, and the experiment place arrangement can be conveniently completed; and the soil box can be effectively used for the measurement of the foundation pressure distribution of the concrete spread foundation, and the advantages of convenient operation, safety ensuring and strong controllability can be provided.