The invention discloses a liftable dynamic linkage LED underground lamp which comprises multiple shells embedded in a lamp groove in the ground. An LED lamp body is arranged in each shell, a control box is fixed on the ground on one side of one of the shells, a controller and a driving motor which are connected mutually are arranged in the control box, an output shaft of the driving motor is vertically downward and is fixedly connected with a driving shaft, the lower end of the driving shaft extends below the ground and is fixedly provided with a driving bevel gear in a sleeved manner, the driving bevel gear is meshed with a driven bevel gear which fixedly sleeves a linkage rotating shaft, multiple transmission bevel gears sequentially sleeve the linkage rotating shaft fixedly, each transmission bevel gear corresponds to one shell positioned above and is meshed with a lifting bevel gear which fixedly sleeves a lifting screw, and the upper end of each lifting screw is in threaded connection at the bottom of the corresponding shell. The liftable dynamic linkage LED underground lamp can be lifted and lowered and can realize dynamic lighting effect in a combined manner.