  We propose here a set of new methods to directly detect light mass dark
matter through its scattering with abundant atmospheric muons or accelerator
beams. Firstly, we plan to use the free cosmic-ray muons interacting with dark
matter in a volume surrounded by tracking detectors, to trace possible
interaction between dark matter and muons. Secondly, we will interface our
device with domestic or international muon beams. Due to much larger muon
intensity and focused beam, we anticipate the detector can be made further
compact and the resulting sensitivity on dark matter searches will be improved.
Furthermore, we will measure precisely directional distributions of cosmic-ray
muons, either at mountain or sea level, and the differences may reveal possible
information of dark matter distributed near the earth. Specifically, our
methods can have advantages over `exotic' dark matters which are either
muon-philic or slowed down due to some mechanism, and sensitivity on dark
matter and muon scattering cross section can reach as low as microbarn level.
