This paper reports results of the X-ray diffraction using CuK radiation of liquid phenylcyclohexane at room temperature. An angular distribution of X-ray scattered intensity was measured. The electron-density radial-distribution function was numerically found using Fourier analysis. Structural parameters, the mean distances between the neighbouring molecules and the mean coordination numbers were found. A simple model of local arrangement of the molecules in liquid phenylcyclohexane was proposed.