The invention provides experimental equipment for measuring Planck constants based on a pressure sensor. The experimental equipment comprises a photometer head, a light source, a light source frequency adjusting device and a substrate, wherein the photometer head comprises a metal piece, the thin film type pressure sensor and a pressure value output unit. The substrate supports the photometer head and the light source and can adjust the positions and the orientations of the photometer head and the light source. According to experimental equipment, the pressure sensor is utilized to measure electrons emitted from the surface of irradiated metal instead of measuring electric signals generated by the electrons in the prior art, compared with the mode that a phototube is utilized to measure the electric signals, applied voltages or anodes are not needed when the pressure sensor is used for measuring pressure, and therefore anode currents, dark currents and contact potential differences are avoided, and experimental accuracy is improved.