One-dimensional photonic crystal with prism coupling is constructed, and its transmission property and structure are simulated by transmission matrix. Result show: there is a surface wave on the prism coupling photonic crystal. Moreover, the angle site, reflectivity and Full Width at Half Maximum (FWHM) in the reflected spectrum of the surface wave will change when the refractive index and thickness of medium change. Besides, this surface wave is very sensitive to the property of the outmost layer. These properties are useful for designing high accuracy sensor.