The invention discloses a radiant floor heating system provided with an intelligent power management system. The radiant floor heating system comprises a heat preservation water tank, a heater and a radiant floor heating assembly, wherein the radiant floor heating assembly comprises a radiant floor heating control portion. A water outlet pipe on the heater is connected to a first three-way valve,and is further connected with the radiant floor heating control portion and the heat preservation water tank through the first three-way valve; the heat preservation water tank is connected with a second three-way valve through a water pipe, and is further connected to the heater through the second three-way valve; and the radiant floor heating control portion is connected with the second three-way valve through the water pipe. A house-service total wire of a house-service total distribution box is firstly connected with the intelligent power management system, and then connected with the heater and other household appliances. When changes occur on electricity utilization power of other household appliances, the intelligent power supply management system carries out piecewise linear adjustment on heating power of the heater, and the adjustment amplitude for heating power of the heater is 100 w.