Abstract　 　　
　 The Interface Region Imaging Spectrograph (IRIS) satellite was successfully launched on June 27 2013 in USA. It has a payload of the most sensitive and powerful spectrometer in UV waveband to observe the transition region and chromosphere of the Sun. Its major scientific objective is to understand the problems of coronal heating, origin of solar wind, and solar eruptive events. Since July 21, IRIS has started its observations in far and near UV wavebands with extremely high temporal, spatial, and spectral resolutions. After three-month calibration, now the scientific data is open to communities. In this talk, I will present the design of instrument, the calibration before and after the launch, the preparations for the operation, operations after the launch. I will also present the coordination of the IRIS team members in different stages from 2009 which includes LMSAL, SAO, MSU in US and Oslo university in Norway. Within the 3 months after IRIS first light, we have obtained a large amount of data. I will show parts of the data and the preliminary results of the analyses, and demonstrate how to browse, acquire, and analyze the calibrated data. To increase the scientific output, IRIS team attaches great importance on the joint observations from space and ground. In the end I will introduce the observation program and how to combine it with the observations by some other instruments.