The invention discloses a current switching device for detecting the life of a sodium-sulphur battery electrolyte ceramic tube in the field of energy storage. According to the current switching device, a first contactor KM1 and a second contactor KM2 which are closed and opened in turns are arranged between a sodium-sodium battery and an external charge-discharge device, the direction of a charge current for charging the sodium-sodium battery by the external charge-discharge device is switched to enable the charge current to switch between the two states of flowing to the negative pole of the sodium-sodium battery from the positive pole of the sodium-sodium battery, and flowing to the positive pole of the sodium-sodium battery from the negative pole of the sodium-sodium battery. The technical effects are as follows: the switching of the current direction can be realized in detection for the life of the sodium-sulphur battery electrolyte ceramic tube according to the changes of the current, and the test working of detection for the life of the sodium-sulphur battery electrolyte ceramic tube is automatically finished by matching with the working of the external charge-discharge device, thus saving labour and increasing efficiency.