OBJECTIVES:  The purpose of this study was to explore the quality of angiography equipment in  diagnosis and treatment used in Mongolia, compare the use of angiography in Mongolia to international standards, type and number of angiography examinations, radiologist and patient’s health safety from the effects of X-rays, and the study the benefits of the quality control tests of X-rays and how they affect image quality and other factors. METHODS: By experimental method , used an ionization chamber and test object for x-ray image quality to assess angiographic image quality based on The Mongolian National Standard MNS 5391:2004. A total of 5 angiographies were studied. Measurement acceptance of kV assurance, linearity, repetition of kV,mA,mAs, image resolution  were not higher 5% from reference values. RESULTS:  Standard derivation of kV assurance was moderate (St.derivation< 1.2%). The repetitions of kV,mA,mAs were in normal range (derivation coefficient<0.01 ). Image resolution was acceptable (1.4-3.1 lp/mm) CONCLUSIONS: Review of this study I observed following problems such as we use and installed the oldest equipments from other countries, those were worked over than 10 years; spare parts were not manufactured; not installed software for measurement and process of patients and angiographic staff x-ray doses; not having optional units for evaluating and fixing image quality; quality control performance is made by Nuclear Energy Agency of Mongolia just one time a year; not acceptance of image processing, delivering and printing system. Therefore, more important things are in this field are development and renovation of equipments.