A wearable device whole machine current test method is disclosed. The method is characterized in that a user can eliminate an affect on battery charging and a lithium battery and test a current of a wearable device under a condition that a machine is not dismounted; and the method is different from a previous method of testing a certain load separately, mutual influence between the multiple loadsis creatively considered, and the current is tested under the condition that the multiple loads interfere with each other. The above mode is not used in a wearable field and even is not mentioned before.