A cordless lamp, comprising: a bottom housing, comprising an open upper end, which the open upper end of the bottom housing is provided with a clamping groove and a snap ring that is arranged on an inner wall of the bottom housing; a cover housing, comprising an open lower end and interlocked with the bottom housing, wherein the cover housing is provided with a first locking protrusion and a second locking protrusion, wherein the first locking protrusion is snap-fitted with the snap ring making the open upper end of the bottom housing abutting against the open lower end of the cover housing to form a first waterproof structure, and wherein the second locking protrusion is fitted with the clamping groove, and an adhesive is filled between the second locking protrusion and the clamping groove to form a second waterproof structure; and a light-emitting module, arranged between the bottom housing and the cover housing, wherein the cover housing comprises a main body and a lamp hood protruding from the main body, wherein the lamp hood comprises a light outbound surface, and wherein the light outbound surface is arranged at an included angle with a bottom wall of the cover housing, wherein the light-emitting module comprises: a reflecting cup, arranged in the lamp hood,wherein a top wall of the reflecting cup abuts the light outbound surface, and a bottom wall of the reflecting cup is provided with a matching hole; and a circuit board, arranged on the bottom housing, and comprising a light-emitting element that is arranged on the circuit board and fitted with the matching hole, the cordless lamp is characterized in that: the light-emitting module further includes a reflecting element disposed in the reflecting cup, wherein one end of the reflecting element is disposed corresponding to the light-emitting element, and a center line of the reflecting element coincides with an axis of the reflecting cup, the reflecting element is in the shape of a frustum of a cone with a hollow structure adhesive to the lamp hood, and the hollow structure forms a concave lens structure on a bottom surface of the reflecting element and an inner surface of the lamp hood. a bottom housing, comprising an open upper end, which the open upper end of the bottom housing is provided with a clamping groove and a snap ring that is arranged on an inner wall of the bottom housing; a cover housing, comprising an open lower end and interlocked with the bottom housing, wherein the cover housing is provided with a first locking protrusion and a second locking protrusion, wherein the first locking protrusion is snap-fitted with the snap ring making the open upper end of the bottom housing abutting against the open lower end of the cover housing to form a first waterproof structure, and wherein the second locking protrusion is fitted with the clamping groove, and an adhesive is filled between the second locking protrusion and the clamping groove to form a second waterproof structure; and a light-emitting module, arranged between the bottom housing and the cover housing, wherein the cover housing comprises a main body and a lamp hood protruding from the main body, wherein the lamp hood comprises a light outbound surface, and wherein the light outbound surface is arranged at an included angle with a bottom wall of the cover housing, wherein the light-emitting module comprises: a reflecting cup, arranged in the lamp hood,wherein a top wall of the reflecting cup abuts the light outbound surface, and a bottom wall of the reflecting cup is provided with a matching hole; and a circuit board, arranged on the bottom housing, and comprising a light-emitting element that is arranged on the circuit board and fitted with the matching hole, the cordless lamp is characterized in that: the light-emitting module further includes a reflecting element disposed in the reflecting cup, wherein one end of the reflecting element is disposed corresponding to the light-emitting element, and a center line of the reflecting element coincides with an axis of the reflecting cup, the reflecting element is in the shape of a frustum of a cone with a hollow structure adhesive to the lamp hood, and the hollow structure forms a concave lens structure on a bottom surface of the reflecting element and an inner surface of the lamp hood. a reflecting cup, arranged in the lamp hood,wherein a top wall of the reflecting cup abuts the light outbound surface, and a bottom wall of the reflecting cup is provided with a matching hole; and a circuit board, arranged on the bottom housing, and comprising a light-emitting element that is arranged on the circuit board and fitted with the matching hole, the cordless lamp is characterized in that: the light-emitting module further includes a reflecting element disposed in the reflecting cup, wherein one end of the reflecting element is disposed corresponding to the light-emitting element, and a center line of the reflecting element coincides with an axis of the reflecting cup, the reflecting element is in the shape of a frustum of a cone with a hollow structure adhesive to the lamp hood, and the hollow structure forms a concave lens structure on a bottom surface of the reflecting element and an inner surface of the lamp hood.