In an apparatus for controlling operation of a utility vehicle (10) that runs a working area (70) to perform work by a work unit (20), there provided with a set mowing height inputting unit configured to input a mowing height of lawn mowing work set by a user, a desired mowing height setting unit configured to set a desired mowing height based on the set mowing height inputted by the set mowing height inputting unit, and a mowing height regulating unit configured to regulate height from ground surface of the work unit (20) based on the desired mowing height set by the desired mowing height setting unit.
