The utility model discloses a processing system is softened to circulating water makeup water embrane method at normal water water source, include former pond, ultrafiltration device, middle water tank, receive and strain device, solution tank, circulative cooling tower, desulfurization absorption tower and antisludging agent medicine system, the delivery port in former pond is linked together with ultrafiltration device's water inlet, ultrafiltration device's delivery port is connected with the water inlet of middle water tank, the delivery port of middle water tank and the export of antisludging agent medicine system are received the entry of straining the device through pipeline and guan houyu and are linked together, the product water export of straining the device and solution tank's the entry received is linked together, solution tank's delivery port is linked together with the water inlet of circulative cooling tower, the export of the sewer of circulative cooling tower and the dense water export of straining the device of receiving all are linked together with the water inlet on desulfurization absorption tower. The utility model discloses can be effectual the concentrated multiplying power of improvement circulating water, cost and area are less, it is better to go out water quality of water.