The invention discloses a duplex heat dissipation type LED lamp which comprises a pole body and a barrel body coaxially arranged on the pole body in a sleeving manner. The inner wall of the barrel body is connected with the outer side wall of the pole body through multiple heat sinks, and multiple LED lamp bars are evenly arranged on the outer wall of the barrel body. A fan is arranged at one end of the barrel body, and the other end of the barrel body is sealed. The barrel wall of the barrel body is provided with multiple vent holes. The vent holes are located between every two adjacent LED lamp bars. The duplex heat dissipation type LED lamp further comprises a water tank, a water pump, heat dissipation water pipes, a controller and a temperature sensor. The water pump is connected to the water tank. One end of each heat dissipation water pipe is connected with the water pump, and the other end of each heat dissipation water pipe is connected with the water tank. The heat dissipation water pipes are laid on the two sides of each LED lamp bar. Therefore, the LED lamp bars are evenly arranged on the barrel body of an LED lamp wick, so that emitted light rays are more uniform, the heat sinks and the heat dissipation blocks are arranged in the barrel body, heat of the lamp wick can be dissipated in time, and the service life of the lamp wick is prolonged; and furthermore, the cooling fan is arranged, active ventilation and efficient cooling can be performed, and the duplex heat dissipation type LED lamp is suitable for large-power long-time lighting work and good in adaptability.