Lamp with lamp cap capable of being pulled out upwards to replace lamp bead

The invention discloses a lamp with a lamp cap capable of being pulled out upwards to replace a lamp bead. The lamp comprises a lamp holder assembly and a reflection cup, wherein the lamp holder assembly is formed by assembling a conductive screw head and a clamping installation part, the lamp holder assembly is installed at the top of the reflection cup, a non-detachable protection cover is fixedly installed at the position of a cup opening in the bottom of the reflection cup, one section of the clamping installation part is inserted into the reflection cup, a lamp bead inserting opening is formed in the bottom of the clamping installation part, the lamp bead inserting opening clamps the lamp bead and enables the lamp bead to be electrically connected with the conductive screw head, a detachable matching structure is arranged between the lamp holder assembly and the reflection cup, after the lamp bead is burnt out, the lamp cap assembly is rotated reversely, an old lamp bead inserted in the lamp holder assem