The invention relates to the technical field of detection methods, in particular relates to a method for detecting battery sealing rings. The method comprises the following steps: putting the battery sealing rings into a mesh belt; then putting the mesh belt into water which is heated to 70 to 85 DEG C to be heated for 1 to 2.5 hours; taking the mesh belt out of the hot water by a user; then putting all battery sealing rings in the mesh belt into a centrifugal machine at a time to carry out a spin-drying operation for 5 to 10 minutes; taking the battery sealing rings subjected to the spin-drying operation out and putting into a constant-temperature drying machine to be dried for 1 hour at the temperature of 25 DEG C; taking the dried battery sealing rings out and putting on an explosion-proof test device to carry out explosion-proof pressure detection; therefore, the accuracy of a detection result of the detection method is higher.