Kit for diagnosing pulp exposure includes a probe syringe used for pulp exposure probe and a current detector device for obtaining a circuit resistance value or an impedance value from current flowing in an electric closed circuit including the probe syringe. The probe syringe further includes a discharge part formed with a flexible hollow material, a cylinder part continuous to the discharge part and retaining ion conductive paste, a piston inserted to the cylinder, and an electric conductive member connecting inside and outside of the probe syringe, and the current detector device obtains the circuit resistance value or impedance value flowing in the closed circuit through the ion conductive paste and displays the obtained value on a display part.
