The invention relates to the design field of projectors, aims to solve the technical problem in the prior art that as a bulb cover plate is arranged at the top or the bottom of a projector, when the maintenance is needed or a bulb is broken, chips inside a bulb assembly or dust and other foreign matters possibly fall off to injure the safety of operation personnel, and provides the projector with the bulb capable of side disassembly. The projector with the bulb capable of side disassembly, provided in the embodiment of the invention, is characterized in that an accommodating cavity is formed in a machine body; the bulb assembly is detachably arranged in the accommodating cavity through an opening formed in the side surface of the machine body and communicated with the accommodating cavity; the maintenance of the bulb assembly and the replacement of the bulb are conveniently realized, and the bulb chips and the foreign matters are prevented from injuring maintenance personnel. The bulb cover plate can be movably or detachably arranged on the machine body to open or close the opening. Through arranging the bulb cover plate for opening or closing the opening, the bulb assembly is conveniently stabilized, and the situation that when the bulb is broken, the bulb chips and the foreign matters injure a user is effectively prevented.