Energy-saving cold and heat source water supply system

The invention discloses an energy-saving cold and heat source water supply system, and relates to the technical field of constant temperature cold and hot water supply. The energy-saving cold and heat source water supply system comprises a cooling water pump, a condenser, a three-way valve, a cooling tower, a cold water temperature controlling water pump, a cold water tank, a mixed water tank, a hot water tank, a chilled water pump, an evaporator, a hot water controller, a hot water tank temperature sensor, a cold water controller and a cold water tank temperature sensor. The electric heating adjustment effect on the cold and heat source water supply system can be avoided; through optimizing hydrothermal utilization, an electrical heating compensation facility of the cold and heat source water supply system can be eliminated, so that the system can save energy and reduce emission.