A speaker module includes a casing whereon an opening is formed. The casing includes a blocking structure disposed on a side of the opening. The speaker module further includes a first speaker device, which includes a first housing, a first speaker unit disposed inside the first housing, and an engaging component connected to an end of the first housing for engaging with the blocking structure when the first housing is pulled out of the casing through the opening and for rotating relative to the blocking structure so as to adjust an angle of the first speaker unit. The speaker module further includes a second speaker device connected to the first speaker device and capable of passing through the opening, which includes a second housing connected to the first housing in a slidable manner relative to the first housing, and a second speaker unit disposed inside the second housing.