Circulating current testing method and battery testing system

The invention relates to a circulating current testing method and a battery testing system. The method comprises the following steps: determining a target test working condition from a plurality of test working conditions according to the sample type of a test sample; wherein the sample type comprises at least one of a lithium iron phosphate battery, a ternary lithium battery and a sodium battery; the target test condition comprises at least one of the following items: temperature difference, health degree difference, charge state difference and static voltage difference; performing test operation on the test sample according to the target test working condition; the test operation comprises at least one of standing operation, charging operation, discharging operation and heat balance operation; determining a target test result according to the test data collected in the test process; wherein the target test result is used for representing whether circulation exists in the test sample or not. According to the