Window apparatus for obtaining microscopic image of in vivo breast tissue and method for obtaining image using same

Disclosed are a window apparatus for obtaining a microscopic image of in vivo breast tissue and a method for obtaining an image using same. According to an embodiment of the present invention, provided is a window apparatus comprising: a first chamber which has a ring structure, having an open window on the center, and has a cover glass disposed on the upper part and breast tissue placed on the lower part; a second chamber which has an opening window on the center, is coupled to the first chamber and is for supporting the breast tissue; and a chamber holder which is for fixing the first chamber and second chamber and has formed thereon a tilting mount placing unit on which a tilting mount is placed such that the cover glass and an object lens of a confocal microscope system stays parallel to each other. The present invention enables the biological environment of an animal to be maintained as well as cell-level and molecular-level microscopic images of in vivo tissue to be stably obtained in a long term.