At the UVSOR Facility, a 750‐MeV storage ring has been operated with an initial current of 200 mA. It has two undulators and a superconducting wiggler. A computer control system with two VAXs was introduced. The bunch length at the single‐bunch operation was studied. A gain measurement for free electron laser study was successfully done. The number of beam lines is 19. By the use of these beam lines, about 140 programs have been accomplished in the fiscal year 1990. Among them, a photoelectron coincidence study on Xe atoms, a Te 4d absorption study inp‐ andn‐type SnTe, and a photostimulated desorption study of Na atoms from sodium halides are demonstrated as topics. The Department of Vacuum Ultraviolet Photoscience has been newly approved at IMS to impel the researches by using UVSOR.