A column-type cable entry assembly for an explosion-proof lamp, the cable entry assembly being used to connect a cover and a rod of the explosion-proof lamp and to allow a cable for power transmission to pass therethrough, characterized by comprising: a first connecting member, the first connecting member having one end configured to be joined to the cover; a positioning member, wherein the positioning member is configured to be an explosion-proof cable gland, and the positioning member comprises: a connecting portion, the connecting portion being configured to be joined to the first connecting member; a sealing portion, the sealing portion abutting to the connecting portion; and a locking portion, the locking portion being configured to disengage from or lock the sealing portion so as to release or lock and position the cable thus allowing not locking the cable during joining of the first connecting member to the cover, and locking and positioning the cable after the first connecting member is joined to the cover so as to prevent the cable from rotating during joining of the positioning member to the first connecting member and during the joining of the first connecting member to the cover, and the locking portion being not joined to the first connecting member; and a second connecting member, the second connecting member being configured to be connected to the other end of the first connecting member so as to cause the positioning member to be sleeved therein and the first connecting member to be exposed. a first connecting member, the first connecting member having one end configured to be joined to the cover; a positioning member, wherein the positioning member is configured to be an explosion-proof cable gland, and the positioning member comprises: a connecting portion, the connecting portion being configured to be joined to the first connecting member; a sealing portion, the sealing portion abutting to the connecting portion; and a locking portion, the locking portion being configured to disengage from or lock the sealing portion so as to release or lock and position the cable thus allowing not locking the cable during joining of the first connecting member to the cover, and locking and positioning the cable after the first connecting member is joined to the cover so as to prevent the cable from rotating during joining of the positioning member to the first connecting member and during the joining of the first connecting member to the cover, and the locking portion being not joined to the first connecting member; and a connecting portion, the connecting portion being configured to be joined to the first connecting member; a sealing portion, the sealing portion abutting to the connecting portion; and a locking portion, the locking portion being configured to disengage from or lock the sealing portion so as to release or lock and position the cable thus allowing not locking the cable during joining of the first connecting member to the cover, and locking and positioning the cable after the first connecting member is joined to the cover so as to prevent the cable from rotating during joining of the positioning member to the first connecting member and during the joining of the first connecting member to the cover, and the locking portion being not joined to the first connecting member; and a second connecting member, the second connecting member being configured to be connected to the other end of the first connecting member so as to cause the positioning member to be sleeved therein and the first connecting member to be exposed.