A freezer lamp, comprising: a strip lamp holder, a light module and a socket connected to external power supply, the light module disposed into the strip lamp holder, the socket disposed at the edge portion of the strip lamp holder and electrically connected to the light module, wherein the strip lamp holder comprises a main lateral surface and a mounting lateral surface, a installation groove is formed in the main lateral surface along length direction thereof, the light module is received in the installation groove; and two clamping grooves are formed in the mounting lateral surface along length direction thereof and are spaced apart from each other, a plurality of decks are formed in the mounting lateral surface, the decks comprises a main body and a clamping edge which is perpendicular to two lateral sides of the main body, the main body is fixable on a freezer, the distance between the two clamping edges is exactly equal to that between the two clamping grooves, the clamping edge is buckled into the clamping groove, a convex groove formed in the mounting lateral surface along length direction thereof and located between the two clamping grooves, wherein the light module comprises a printed circuit board disposed on the installation groove and a plurality of LED chips electrically connected to the printed circuit board, the socket is electrically connected with the printed circuit board, and a strip condensing lens is disposed on the installation groove and is disposed on the front of the printed circuit board, characterized in that said freezer lamp further comprises: a leaf spring formed on the main body of the deck and tilted outwards and leant on the bottom of the convex groove, two through holes opened respectively at two lateral surfaces of the leaf spring for dispose a fastener of the freezer lamp, wherein the two clamping grooves comprise a first clamping groove and a second clamping groove, the first clamping groove is perpendicular to the mounting lateral surface, a first blocking portion is formed between the first clamping groove and the convex groove, a clamping part is formed in the first blocking portion along length direction thereof, one clamping edge of each deck is buttoned directly into the clamping part; the second clamping groove is opened in parallel to the mounting lateral surface, a second blocking portion is formed between the second clamping groove and the convex groove and is parallel to the mounting lateral surface, and a side wall formed between the second blocking portion and the convex groove has an L-shaped section, the other clamping edge of each deck is buttoned directly into the second blocking portion. a strip lamp holder, a light module and a socket connected to external power supply, the light module disposed into the strip lamp holder, the socket disposed at the edge portion of the strip lamp holder and electrically connected to the light module, wherein the strip lamp holder comprises a main lateral surface and a mounting lateral surface, a installation groove is formed in the main lateral surface along length direction thereof, the light module is received in the installation groove; and two clamping grooves are formed in the mounting lateral surface along length direction thereof and are spaced apart from each other, a plurality of decks are formed in the mounting lateral surface, the decks comprises a main body and a clamping edge which is perpendicular to two lateral sides of the main body, the main body is fixable on a freezer, the distance between the two clamping edges is exactly equal to that between the two clamping grooves, the clamping edge is buckled into the clamping groove, a convex groove formed in the mounting lateral surface along length direction thereof and located between the two clamping grooves, wherein the light module comprises a printed circuit board disposed on the installation groove and a plurality of LED chips electrically connected to the printed circuit board, the socket is electrically connected with the printed circuit board, and a strip condensing lens is disposed on the installation groove and is disposed on the front of the printed circuit board, a leaf spring formed on the main body of the deck and tilted outwards and leant on the bottom of the convex groove, two through holes opened respectively at two lateral surfaces of the leaf spring for dispose a fastener of the freezer lamp, wherein the two clamping grooves comprise a first clamping groove and a second clamping groove, the first clamping groove is perpendicular to the mounting lateral surface, a first blocking portion is formed between the first clamping groove and the convex groove, a clamping part is formed in the first blocking portion along length direction thereof, one clamping edge of each deck is buttoned directly into the clamping part; the second clamping groove is opened in parallel to the mounting lateral surface, a second blocking portion is formed between the second clamping groove and the convex groove and is parallel to the mounting lateral surface, and a side wall formed between the second blocking portion and the convex groove has an L-shaped section, the other clamping edge of each deck is buttoned directly into the second blocking portion.