Abstract: The quality of domestic SPECT are appraised and the intrinsic function index of the new equipment are inquiried. The appraisal are carried out following NEMA (National Electrical Manufactures Association) standard set in 1994 and other technology standard of SPECT. The models and radiation source (~(99)Tc~m?~(131)I ) are prepared according to NEMA standard. Intrinsic spatial resolution is 3.8 mm, intrinsic no-uniformity ±(2.1%~3.2%), intrinsic spatial no-linearity o.1~0.6 mm. The results of intrinsic function measurd are better than the enterprise product standard, calculate methods are right, images resolution etc are satisfied, index measured achieve.