The invention discloses a novel LED lamp comprising a lamp post and a lamp cap part; a mounting groove is formed in the lamp post; a plug part is arranged in the end surface at the inner side of the mounting groove; a plug slot is arranged in the plug part; the middle end of the end surface at the inner side of the plug slot is provided with a plug spring; a moving guide slot arranged along the plug slot in an extension way is correspondingly arranged at each of the left and right sides of the plug slot; the plug part at the side, deviated from the plug slot, of each moving guide slot is provided with a slip cavity; a separating column is arranged between each slip cavity and each moving guide slot; a communicating slot is formed in the separating column; a first slip slot is formed in the plug part at the side, deviated from the separating column, of each slip cavity; each first slip slot is located on the bottom position at the outer side of each slip cavity and communicates with the slip cavity; a second slip slot is formed in the plug part above the outer side of each first slip slot; a moving guide rod is arranged between each slip cavity and each first slip slot; the moving guide rod in each slip cavity is connected with a first slip block in a slip fit way; and each moving guide rod is connected with a second slip block in a slip fit way in each first slip slot.