Ceiling type high-pressure sodium lamp convenient to install

The utility model discloses a ceiling type high-pressure sodium lamp convenient to install. The high-pressure sodium lamp comprises an installation base, a lamp holder detachably connected with the installation base and a high-pressure sodium lamp body installed on the lower surface of the lamp holder. A screw hole for mounting and fixing a screw is formed in the edge of the mounting base; the upper surface of the lamp holder is fixedly connected with an adsorption cavity; a plurality of sucking discs which are distributed in the circumferential direction are connected to the adsorption cavityin a communicating manner; a boosting ring is arranged outside the adsorption cavity; the boosting ring is fixedly mounted on the upper surface of the lamp holder; a plurality of circumferentially distributed extrusion rods are hinged to the boosting ring; the upper end part of the extrusion rod is spherical; a spherical extrusion block is mounted at the lower end part of the extrusion rod; the ceiling type high-pressure