A dual-purpose sintering furnace includes: a furnace body (1) having a furnace chamber, and a first furnace mouth (11) and a second furnace mouth (12) which are communicated with the furnace chamber； a furnace door (2) hinged to the furnace body (1) and configured for closing the first furnace mouth (11)； a blocking member (3) lap-jointed inside the furnace chamber and configured for blocking the second furnace mouth (12)； a sample stage (4)； an ejection rod (5) fixedly arranged on a sample placement face of the sample stage (4)； a lifting device (6) configured for driving the sample stage (4) to rise or lower, so that the ejection rod (5) pushes the blocking member (3) until the second furnace mouth (12) is opened, and so that the sample stage (4) enters the furnace chamber through the second furnace mouth (12). The dual-purpose sintering furnace can not only complete a large amount of sintering as conventional sintering, but also implement rapid sintering.
