Aim To investigate the X-ray radiation of coronary heart disease patients rooted in coronary and left ventrical cinematography (CALVC) and intra-coronary stent implantation (ICSI). Methods 112 CHD cases were analysed, including 53 patients with CALVC, and 59 with ICSI. The radiation dose values,such as DAP (dose-area product) and ESD (enter skin dose) measured by using a dose system equipped in Angiostar-Plus, were obtained. Effect dose (ED) was estimated by Monte-Carlo conversion coefficient from the DAP. Results The dose values of DAP, ESD and ED in this serial measured respectively for 59.1±51.5 Gycm 2, 626±590 mGy, 8.3±7.2 mSv; in ICSI group for 83.5±57.6 Gycm 2, 926±656 mGy, 11.7±8.1 mSv; and in CALVC group was 31.9±21.5 Gycm 2, 292±218 mGy, 4.5±3.0 mSv, respectively. The fluoroscopy in ICSI contributed to total exposure dose (DAP: 61.6%±12.9%, ESD: 62.1%±14.2%) were larger than in CALVC (DAP: 47.8%±13.9%, ESD: 44.2%±16.1%); and the contribution of photography for total radiation dose in CALVC (DAP: 52.0%±13.7%, ESD: 58.3%±27.9%) were obviously preponderate over ICSI group (DAP: 38.5%±12.9%, ESD: 37.5%±13.6%). There were statistical difference of dose between ICSI and CALVC (p<0.01), and so do the dose contribution of fluoroscopy or radiography. Conclusion The CHDs patients got higher radiation exposure during a PCI process, radiation dose of treatment mode was evidently higher than that of diagnostic radiography. The main influence on total dose in CALVC was radiography, while in ICSI was fluoroscopy.