The invention relates to a method and a device for testing bearing of transverse force of a solid-sealed polar pole. The device for testing bearing of the transverse force of the solid-sealed polar pole comprises a base and a fixing piece which is vertically arranged on the base and is used for horizontally suspending and fixing the solid-sealed polar pole, wherein the fixing piece is provided with a fixed hole which is fixed to the fixed end of the solid-sealed polar pole. The method and the device disclosed by the invention have the advantages that through detection of the transverse stressof the solid-sealed polar pole, the situation that the solid-sealed polar pole can still stably work when external transverse mechanical force can be borne through the detected solid-sealed polar poleis ensured.