A projection device, comprising at least one projection module (110, 210) and at least one adjusting structure (120, 220), the at least one projection module (110, 210) having at least one optical axis, the at least one projection module (110, 210) being adapted to provide an image beam, wherein the image beam is transmitted along a light transmission path to a projection target and forms a projection image; the at least one adjusting structure (120, 220) being connected to the projection module (110, 210), wherein the adjusting structure (120, 220) is adapted to drive at least a part of the projection module (110, 210) to rotate along the optical axis such that the projection image rotates, characterized in that the adjusting structure (120, 220) is connected to the projection module (110, 210), the adjusting structure (120, 220) is adapted to drive at least a part of the projection module (110, 210) to rotate along a first axis or move along a first direction such that the projection image moves horizontally, and/or the adjusting structure (120, 220) is adapted to drive at least a part of the projection module (110, 210) to rotate along a second axis or move along a second direction such that the projection image moves vertically, wherein the projection module (110, 210) comprises a light source (112, 212), a light valve (114, 214), and a lens set (116, 216), the light source (112, 212) is adapted to provide an illumination beam, the light valve (114, 214) is located on a transmission path of the illumination beam and adapted to convert the illumination beam to the image beam, the lens set (116, 216) is located on a transmission path of the image beam and adapted to transmit the image beam to an outside of the projection module (110, 210), wherein the projection module (110, 210) comprises an outer shell, the adjusting structure comprises a third adjusting element, the third adjusting element is screwed to the outer shell and abuts against the lens set (116, 216), and the third adjusting element is adapted to rotate to move relative to the outer shell, so as to drive the lens set (116, 216) to move along the first direction. the at least one projection module (110, 210) having at least one optical axis, the at least one projection module (110, 210) being adapted to provide an image beam, wherein the image beam is transmitted along a light transmission path to a projection target and forms a projection image; the at least one adjusting structure (120, 220) being connected to the projection module (110, 210), wherein the adjusting structure (120, 220) is adapted to drive at least a part of the projection module (110, 210) to rotate along the optical axis such that the projection image rotates, characterized in that the adjusting structure (120, 220) is connected to the projection module (110, 210), the adjusting structure (120, 220) is adapted to drive at least a part of the projection module (110, 210) to rotate along a first axis or move along a first direction such that the projection image moves horizontally, and/or the adjusting structure (120, 220) is adapted to drive at least a part of the projection module (110, 210) to rotate along a second axis or move along a second direction such that the projection image moves vertically, wherein the projection module (110, 210) comprises a light source (112, 212), a light valve (114, 214), and a lens set (116, 216), the light source (112, 212) is adapted to provide an illumination beam, the light valve (114, 214) is located on a transmission path of the illumination beam and adapted to convert the illumination beam to the image beam, the lens set (116, 216) is located on a transmission path of the image beam and adapted to transmit the image beam to an outside of the projection module (110, 210), wherein the projection module (110, 210) comprises an outer shell, the adjusting structure comprises a third adjusting element, the third adjusting element is screwed to the outer shell and abuts against the lens set (116, 216), and the third adjusting element is adapted to rotate to move relative to the outer shell, so as to drive the lens set (116, 216) to move along the first direction.