The invention discloses a mobile phone shell. The mobile phone shell comprises a mobile phone shell body, and further comprises a mobile phone ring, and a holding slot formed on the back of the mobilephone shell body; the mobile phone ring comprises a mobile phone ring body capable of being rotatably arranged on the mobile phone shell body around a rotating shaft; when the mobile phone ring is held in the holding slot when being rotated to the horizontal; the mobile phone ring body comprises a plurality of mobile phone ring single sheets with through holes, and the adjacent mobile phone ringsingle sheets are in movable connection, thereby enabling the plurality of mobile phone ring single sheets to integrate into one when the mobile phone ring body is in the retracted state, and the through holes on the mobile phone ring single sheets are aligned to form a finger hole for penetrating a finger; when the mobile phone ring body is in an unfolding state, the plurality of mobile phone ring single sheets are lined up to form a support plate; a locking structure is arranged between the rotating shaft and the mobile phone shell body to lock the rotating angle of the mobile phone ring body. The invention provides a mobile phone shell capable of preventing a mobile phone from sliding off and supporting the mobile phone at the same time.