Automatic runoff collector

The utility model discloses an automatic runoff collector which is characterized in that a collector main body is trapezoidal, a collecting opening is formed in an inclined surface of the collector main body, a water outlet is formed in the side surface of one side, far away from the inclined surface, of the collector main body, and a plug for blocking the water outlet is arranged at the water outlet; the filter element is arranged in a collecting channel formed between the water outlet and the collecting opening, and the filter element is used for filtering runoff water flowing through the collecting channel; a collecting cavity for collecting runoff water is formed between the filter element and the plug; a mounting cavity is formed in the collector main body, and a vacuum pump is arranged in the mounting cavity; the collector can conveniently and quickly collect surface runoff water, and through the arrangement of the filter element and the vacuum pump, the surface runoff water can be stably and quickly co