Height adjusting mechanism and household appliance

The utility model relates to the technical field of household appliances, and provides a height adjusting mechanism and a household appliance, the height adjusting mechanism comprises an adjusting rod and a driven adjusting assembly, the adjusting rod is provided with a first thread and a second thread at an interval, the first thread and the second thread are opposite in rotation direction, and the outer diameter of the first thread is larger than that of the second thread; the driven adjusting assembly is suitable for being mounted to equipment to be adjusted, the driven adjusting assembly comprises a first hinge part and a second hinge part which are oppositely arranged, the first hinge part is matched with the first thread, and the second hinge part is matched with the second thread; by rotating the adjusting rod, the first hinge part and the second hinge part get close to each other or get away from each other, so that height adjustment of the to-be-adjusted equipment is achieved. According to the height adjusting mechanism, the sizes of the two threads with opposite screwing directions on the adjusting rod are adjusted, that is, the outer diameter of the first thread is larger than that of the second thread, the installation mode of the height adjusting mechanism can be simplified, and the performance allowance of the adjusting rod is reasonably utilized.