The feasibility of a 10-million-resolution virtually imaged phased-array spectrograph with a laser frequency comb as the calibration source is studied based on the virtually imaged phased-array dispersion characteristics. The numerical simulations propose two design schemes under extreme conditions with respective pros and cons. A simulated 2D spectral image is provided that satifies the the resolution of 10 million with simultaneous calibration using general parameters. Finally， the performance of such spectroscopy in some foreseeable applications is discussed briefly.