Switching device for filter of automatic gearbox

The utility model discloses an automatic gearbox filter switching device which comprises an adapter, the adapter is coaxially and detachably connected with an adapter, and the adapter is detachably connected with an oil filter seat of an external gearbox body. A supporting table is detachably mounted in the adapter; in the gearbox testing stage, the filter of the gearbox is replaced by the filter testing device, off-line testing is carried out during operation of a testing rack, and the problem that the early service life of a filter element of the filter is shortened due to the fact that the filter is installed during testing is avoided. According to the device, a second oil inlet hole and a second oil outlet hole are formed in the supporting table, and a third oil inlet hole and a third oil outlet hole are formed in the adapter, so that an oil path of the automatic gearbox body is led out of the gearbox body for circulation and index detection; the technical problems that in the prior art, when an automatic