The invention discloses a novel water glass convenient to clean. The novel water glass comprises a base and is characterized in that a plurality of glass shells for forming a glass body are arranged on the base, the bottom ends of the glass shells are hinged to the base, a sealed sleeve ring is arranged outside the base and the glass body, the bottom of the sealed sleeve ring is sealed, longitudinal rail grooves are formed in upper end faces of the glass shells, the longitudinal rail grooves are arranged in a horizontally penetration mode, and a roll-film waterproof mechanism which can move along the longitudinal rail grooves and surround the glass body to prevent water leakage among the glass shells is arranged on some glass shell. The novel water glass disclosed by the invention has a simple structure and is convenient to use; as the glass body is formed by a plurality of glass shell, the glass body can be opened when being cleaned; thus, the novel water glass is convenient to clean, a cleaning effect is good, and a use requirement of people is met.