The invention provides an automatic liquid sprayer for travelling. The automatic liquid sprayer comprises a bottle body and a base. Two independent liquid containing cavities are formed inside the bottle body. The two liquid containing cavities are formed in the upper portion of the bottle body. The bottle body is movably installed on the base. A micro air pump and a reversing valve are installedinside the bottle body, a liquid outlet nozzle is arranged in the center of the bottom of the bottle body, the liquid outlet nozzle is communicated with an air outlet of the micro air pump and an outlet of the reversing valve through pipelines at the same time, two inlets of the reversing valve are communicated with the two liquid containing cavities, an air outlet of the micro air pump is communicated with the liquid outlet nozzle through a linear pipeline, and an outlet of the reversing valve passes through the liquid outlet pipeline in the airflow direction and enters the linear pipeline; alithium battery is arranged inside the bottle body, the micro air pump and the reversing valve are powered by the lithium battery, and a USB charging interface connected with the lithium battery is arranged on the bottle body. Integration of various kinds of split liquid during traveling can be achieved, and the automatic liquid sprayer is convenient and rapid to use, sanitary and clean.