The utility model discloses a high-integration control device for engine cooling liquid. The high-integration control device comprises a liquid buffer special pipeline, a degassing special pipeline and an
electric control circulation device. One end of the liquid buffer special pipeline takes water from the cylinder body and then flows back to the
electric control circulation device from the other end, the degassing special pipeline is integrated on the liquid buffer special pipeline, and the liquid buffer special pipeline comprises a liquid buffer water taking
pipe and a degassing special pipeline, one end of the first liquid slow water return
pipe is used for being connected with a liquid
slow cooling device; one end of the connecting rubber
pipe is hermetically communicated with the other end of the first liquid slow water return pipe; one end of the second liquid slow water return pipe is hermetically communicated with the other end of the connecting rubber pipe; one end of the third liquid slow return
water pipe is hermetically communicated with the other end of the second liquid slow return
water pipe, and the other end of the third liquid slow return
water pipe is hermetically communicated with the
electric control circulation device. Therefore, under the integrated cooperation of the liquid buffer pipeline, the degassing pipeline and the electric control circulation device, the stable operation of the whole vehicle cooling
system can be ensured.