The invention provides a lead acid storage battery open failure test system and prediction method. The lead acid storage battery open failure test system comprises a lead acid storage battery high temperature accelerated corrosion subsystem and a lead acid storage battery normal temperature charge and discharge subsystem. The lead acid storage battery high temperature accelerated corrosion subsystem is used for performing constant floating charging to the lead acid storage battery pack under the high temperature environment and comprises a high temperature test box, a floating charging deviceand a storage battery monitoring device. The a lead acid storage battery normal temperature charge and discharge subsystem is used for performing the discharge or charge test on the lead acid storagebattery pack or the open verification storage battery under the normal temperature environment and comprises a constant current discharge load, a charging device and a high current discharge load. Compared with the systems and the methods in the prior art, the lead acid storage battery open failure test system and prediction method have the beneficial effects that the reliable service life of thelead acid storage battery before open failure caused by internal corrosion under the condition of constant floating charging under the normal temperature environment can be predicted.