The invention discloses a limestone activity determination and detection apparatus, which comprises: a casing (1) and a workbench surface (2); the workbench surface is provided with two columns (3), and the columns are provided with column crossbeams (4), and four circular flange type linear bearings (5) and two linear circular guides are matched and installed together, and the upper ends of the guide rails are provided with crossbeams (7); the crossbeam is respectively provided with an acid solution titrating head (9), a stirrer (10), a temperature measuring instrument (11) and central section of a pH value electrode (12); the side surface of the casing (1) is provided with an instant heating type electric water heater (13); the instant heating type (13) is connected with a water valve (14) by pipe fitting, and the water valve (14) is installed on the corner portion of the workbench surface (12), and the valve is connected to the water nozzle (15) by pipe fittings. The apparatus can be used for automation test, and artificial errors can be minimized as much as possible, thereby the measurement precision is increased.