  We propose the nucleon consumption induced by dark matter as a new scenario
to overcome the energy threshold of direct detection. It can be realized with
proton ($\chi + p \rightarrow \chi + \ell^+$) or neutron ($\chi + n \rightarrow
\chi + \nu$) target. Both effective operators and concrete models are provided
to illustrate the idea. Since the initial DM and nucleon velocity is only
$10^{-3}$ and $1/4$ of the speed of light, respectively, the cross section and
hence event rate are determined by the involved particle masses and not
affected by the nucleon Fermi motion. Of the two realizations, the proton
consumption has richer phenomena with both charged lepton and the daughter
nuclei de-excitation to allow double or even triple coincidence to
significantly suppress the background. We also illustrate the projected
sensitivities at DM and neutrino experiments such as PandaX-4T, DUNE, JUNO, and
Hyper-K.
