The invention relates to a soil foundation multiple-cable antifloating foundation. The soil foundation multiple-cable antifloating foundation comprises an upper plate, a plurality of pulling-resistant filament anchor rods, cushion plates matched with the pulling-resistant filament anchor rods, and anchor plates matched with the pulling-resistant filament anchor rods, wherein the upper plate is embedded into a soil foundation, and the upper surface of the upper plate is higher than the ground surface; the upper plate is in a polygon shape; each corner of the upper plate is provided with an anchor rod hole I; the center of each cushion plate is provided with an anchor rod hole II; the bottom ends of the multiple pulling-resistant filament anchor rods are anchored, the top ends of the multiple pulling-resistant filament anchor rods penetrate through the anchor rod holes I in the upper plate and penetrate through the anchor rod holes II in the cushion plates correspondingly to be connected with the anchor plates; the pulling-resistant filament anchor rods are composed of pulling-resistant filaments; and waterproof explosives with detonators are bound to the lower portions of the corresponding pulling-resistant filaments, and the pulling-resistant filaments are evenly distributed on the periphery of the corresponding waterproof explosives with the detonators in the circumference direction. The invention further discloses a construction method of the foundation. The structure is simple, the construction mode and the foundation mode are changed radically, the investment is remarkably reduced, and spoil is reduced.