Municipal garden energy-saving lamp convenient to replace

The utility model discloses a municipal garden energy-saving lamp convenient to replace. The municipal garden energy-saving lamp comprises a lamp holder, an energy-saving lamp body and a lifting device. The lifting device is arranged in the lamp bracket; a first sliding groove is formed in one side of the lamp holder in the length direction of the lamp holder. A mounting table is arranged in the sliding groove I in a sliding manner; one end of the mounting table is fixedly connected to the lifting device; an annular empty groove I is inwards formed in the lower end surface of the mounting table and positioned on the outer side of the groove; a hollow groove II parallel to the annular hollow groove I is formed in the middle of the interior of the mounting table; the section of the hollow groove II is larger than that of the annular hollow groove I; the outer ring of the hollow groove II is square; the annular empty groove I is communicated with the empty groove II; a cleaning device used for cleaning the energ