Oil supply system of bearing assembly and compressor

The utility model provides an oil supply system of a bearing assembly and a compressor. The oil supply system of the bearing assembly comprises the bearing assembly, the bearing assembly comprises a supporting bearing and two thrust bearings which are arranged in sequence, the supporting bearing is provided with a first oil inlet, and the thrust bearings are provided with second oil inlets; the main oil inlet pipeline is used for being connected with an external oil supply source; the first auxiliary oil inlet pipeline is connected with the main oil inlet pipeline and the first oil inlet; the second auxiliary oil inlet pipeline is connected with the main oil inlet pipeline and the two branches, and each branch is connected with the corresponding second oil inlet; and the flow adjusting part is arranged in the branch and in the first auxiliary oil inlet pipeline or at the first oil inlet, and the adjusting part is used for reducing the local inner diameter of the flowing path where the adjusting part is locate