Abstract: Liquid lens is a new optical element, which implements zooming without mechanical moving. A new way to design zoom lens system was proposed.A rare kind of liquid lens with large aperture was used to design a zoom system. The principle of the liquid lens was introduced first, then the possibility of designing the zoom liquid lens system was analyzed and various design plans were provided, and finally the Zemax software was utilized to simulate zoom system. A frontal lens group scheme was given aiming at the large field of view(FOV),and a zoom system was achieved with the FOV of 60 and the zoom ratio of 6.2.