The collection method of the siphonic waterproof drainage collection system is to continuously flow soil seepage water through PED14 high-molecular protective drainage special-shaped sheets to the siphonic drainage trough. The water in the siphonic drainage trough quickly gathers at the outlet. The outlet is filled with water by changing the diameter of the pipe, thus forming a siphonic flow. Then it successively enters the observation well and the collection well, and is finally reused. The construction process involves laying the adhesive bar, siphonic drainage trough, PED14 polymer protective drainage special-shaped sheet, reducer pipe, observation well and collection well in sequence. Siphonic drainage collection method and construction technology, no need to find the slope, can achieve zero-slope organized drainage. By adopting the principle of siphoning, the original passive drainage has been changed to active drainage, effectively solving the problems of incomplete drainage, leakage and damage to vegetation in the existing drainage structure. This can reduce costs and construction periods, effectively extend the service life of buildings, and the collected water can be reused.