The invention provides a novel steam generator. The novel steam generator comprises a heating shell, a water inlet and a steam outlet are formed in the heating shell, the steam outlet is arranged to be an inclined hole which is axially inclined for 20 degrees, a W-shaped heating tube is arranged in the cavity of the heating shell, a steam flow guide baffle is arranged on the inner wall of the heating shell, and the W-shaped heating tube and the steam flow guide baffle are arranged in an overlapped way. The novel steam generator has the advantages that the path becomes smoother and resistance-free during steam jetting, the quantity of steam is increased and the jetting distance is increased; since the W-shaped heating tube and the steam flow guide baffle are arranged in the overlapped way, the internal part is uniformly heated and the thermal efficiency is effectively improved; the steam circulating path of the cavity is further prolonged, the surrounding flow is formed and is in full contact with the heating tube, and the goals of steam overheating and steam-liquid separation are completed more effectively; the thermal conversion efficiency is high, the output steam temperature is high, the quantity of the steam is large, the jetting distance is long and the flowing passage structure is reasonable.