The invention relates to an oil splashing treatment process of a thrust combination bearing of an umbrella-type hydro-generator. The oil splashing treatment process is characterized in that the process includes the following steps of additionally welding an annular oil baffle plate to the upper portion of an oil blocking cylinder at the bottom of a combination face vertical rib; additionally welding a backward vane to an outer circle, close to the bottom of the oil baffle plate, of the oil cylinder wall, wherein the direction of the backward vane is opposite to the running direction of a unit; additionally forming a 50mm*50mm comb tooth type oil outlet in an existing two-layer annular rib plate of the oil blocking cylinder to prevent stair-type climbing of oil flow; reducing the oil level in an oil groove by 20mm, wherein the height of a lower guiding bearing bush is 200mm; removing seven layers of oil-gas filter plates from a contact type sealing device breather; omitting a surrounding plate on the periphery of an annular rib, removing obstacles from an oil flow circulating path, and reducing disturbance, thereby enabling upward-climbing oil flow to conveniently and timely flow back, and ensuring smoothness of a backflow path. All parts of a thrust bearing undergoing the treatment process run normally and stably, no oil splashing phenomenon or oil mist diffusion phenomenon of the thrust bearing occurs, the treatment effect is obvious, and therefore the persistent ailment is thoroughly cured, and unit safety and civilized running are beneficially ensured.