The invention relates to a method and a system for heating and melting snow and ice on the road surface under the current surface effect. The system comprises an alternating-current power supply, an input cable, a three-phase transformer, a three-phase balancer, an electrical switch, a temperature control device, a snow and ice melting sensor, a power supply terminal box, highly-ferromagnetic iron pipes, a transitional connecting tube, a high temperature wire, an electrical switch (3), a U-shaped bent-pipe wire penetrating part, an end terminal box, a grounding protector and a cathode protector. A U-shaped surface action heating element which is formed by connecting a plurality U-shaped highly-ferromagnetic iron pipes is energized under the surface effect and the proximity effect to efficiently emit heat to rapidly melt the snow and the ice on the road surface. The U-shaped highly-ferromagnetic iron pipes are buried in the teinforced concrete or asphalt road surface. The U-shaped surface action heating element has high mechanical strength and quite long service life, can be used permanently, is not easy to be subjected to the wire disconnection, is very easy to repair when being damaged, needs only one power supply point, can not affect the three-phase power supply balance, can be heated uniformly, adjusted randomly in temperature and constructed and installed conveniently with least labor, has high degree of automation, does not need electric insulation, is safe, reliable and economical and can not pollute the environment.