Abstract: A brewing device includes a casing and a water supply mechanism. The water supply mechanism is disposed in the casing. The water supply mechanism includes a ball plate, a rotating base, a driving module, a linkage base, a ball, a linkage rod, a pivot, a water supply nozzle and a fixing rod. The ball plate has a track. The rotating base is disposed at a side of the ball plate. The driving module is connected to the rotating base. The linkage base is disposed on the rotating base. The ball is disposed on the linkage base and abuts against the track. The linkage rod has a first end, a second end and a longitudinal groove. The first end is pivotally connected to the linkage base by the pivot. The water supply nozzle is connected to the second end. An end of the fixing rod is disposed in the longitudinal groove.