The present provides a soymilk machine/juicer with grinding function, comprising a pair of concentric rotator (13) and stator (14) that are vertically arranged in a house. There are at least two thread convex ribs (16) on said rotator (14), and the thread convex ribs (16) are evenly distributed on the outer surface of a rotator body (15). Rotary clearance is defined between the thread convex ribs (16) of the rotator (13) and the inner wall of the stator (14). The middle upper part of said rotator body (15) is a revolved portion with small upside and large downside. The clearance of the upside of the rotator body (15) corresponding to an upper filter net (17) on the stator (14) is largest, which is the smashing section for dealing with stuff after stuff is fed. The clearance of the middle part of the rotator body (15) corresponding to the middle upper part of an abrasive disc of the stator (14) is medium-size, which is for smashing stuff further. The clearance of the middle lower part of the rotator body (15) corresponding to the lower part of the abrasive disc of the stator (14) is gradually shortened to less than 1 mm, which is the grinding section for stuff. The part of the rotator (13) under the grinding section corresponding to a lower filter net (18) on the stator (14) is the separating section for the soymilk from residue. The rotator of said soymilk machine/juicer can rotate stably and have less noise, and stuff can be grinded to be finer.