Focusable projection lamp

The utility model relates to the technical field of lighting lamps, in particular to a focusable projection lamp, which comprises a shell with an opening on an upper end, wherein a light source plate, an illuminating source and a reflection cup are arranged in the shell; a cylindrical connecting part is arranged on the bottom part of the shell; the light source plate is connected with the connecting part through a focusing-adjustment device capable of driving the light source plate to ascend and descend; the focusing-adjustment device comprises a radiator and a rotating sleeve; a limiting part for limiting relative axial move of the rotating sleeve and the radiator is arranged on an inner side of the rotating sleeve; the limiting part is connected with the radiator; a jacking slope is arranged on an upper end of the rotating sleeve; a corresponding slope correspondingly matched with the jacking slope is arranged on a lower end of the connecting part; the jacking slope of the rotating sleeve is connected onto