The invention discloses a lamp changer. The lamp changer comprises a long rod and a lamp changing device, wherein the lamp changing device is fixed at one end of the long rod and comprises a first cavity, a first cover and a second cavity; the first cavity is used for holding a first group of specification lamp tubes; the first cover covers the top of the first cavity; the second cavity is used for holding a second group of specification lamp tubes; the cross section area of the second cavity is greater than that of the first cavity; the second cavity is detachably fixed at the top of the first cavity; the bottom of the first cavity and the long rod are fixed together; the first cavity is used for changing an energy saving lamp with the first group of specification lamp tubes; the second cavity is used for changing an energy saving lamp with the second group of specification lamp tubes. According to the lamp changer, multiple types of energy saving lamps which are positioned on a ceiling can be conveniently and quickly disassembled, a ladder does not need to be used, and a professional maintainer does not need to specially repair the energy saving lamps.