Filter element for accurately measuring weight of oil injection of retarder and weight measuring method of filter element

The invention discloses a filter element for accurate weight measurement of retarder oil injection and a weight measurement method of the filter element. The filter element structurally comprises a filter element inner layer, a filter element outer layer and a base. A plurality of supporting columns are arranged on the base, the filter element inner layer comprises a honeycomb speed reducing mechanism, positioning holes corresponding to the supporting columns in number are formed in the bottom of the filter element inner layer, the supporting columns and the positioning holes are correspondingly installed and connected, the filter element outer layer is fixedly arranged outside the filter element inner layer in a sleeving mode, and a one-way valve is arranged on the upper portion of the filter element outer layer. In the weight measuring process, the base and the filter element can be detached, when the weight measuring filter element is detached, the situation that an operator makes contact with the weight m