Abstract: The basic physics of photon localization in random optical system and its research topics have been described.Some important experiments to observe the phenomena of strong photon localization with ordinary lasers are introduced.Experimental results of photon localization at time domain with ultrashort laser pulses are summarized.It is recommended to enhance the study on generation of tunable mid infrared ultrashort laser pulses in order to stimulate the investigation on the photon localization at mid-infrared wavelength range.