A fast heat dissipation LED lamp, comprising a lower housing, a fan device, an upper housing device, a baffle device, a light emitting device, a flow guide device and a power supply device, the lower housing is provided with pins, a first fixing rod, a second A through hole, a first cross bar, and bolts, the fan device includes a fan frame, a first pipe, a fan, a second fixing rod, a third fixing rod and a first fixing ring, and the upper casing device includes an upper casing and a first bracket , flat glass, a first fixed block, a second cross bar and an air outlet pipe, the baffle device includes a first vertical bar, a first spring and a baffle, and the light emitting device includes a lens element, an LED lamp, an aluminum substrate, a closing plate, a second The fixed block, the support ring, the flow guide device includes a filter frame, the water tank, the first connecting rod, the second connecting rod, the guide block and the third connecting rod, the power supply device includes a fixed frame, a curved plate, a power module and cables, the The invention can effectively dissipate heat for the heating element in the LED lamp, and the heat dissipation effect is good and fast.