To achieve a mechanism for prioritizing a handle operation with a simple configuration in a wheel loader in which a steering operation can be performed by a handle operation and a lever operation, and to stably operate the mechanism. A steering device of a wheel loader includes a handle-prioritizing valve having a prioritizing control valve and a selector valve. The prioritizing control valve is disposed between a handle control valve and a lever electromagnetic control valve, and between the handle control valve and a steering valve, and includes: a handle stage that communicates the handle control valve with the steering valve and blocks between the lever electromagnetic control valve and the steering valve; and a lever stage that blocks between the handle control valve and the steering valve and communicates the lever electromagnetic control valve with the steering valve. The selector valve switches the prioritizing control valve to the handle stage when a differential pressure occurs between right and left pilot oil paths.