  Dark photons can be the ultralight dark matter candidate, interacting with
Standard Model particles via kinetic mixing. We propose to search for
ultralight dark photon dark matter (DPDM) through the local absorption at
different radio telescopes. The local DPDM can induce harmonic oscillations of
electrons inside the antenna of radio telescopes. It leads to a monochromatic
radio signal and can be recorded by telescope receivers. Using the observation
data from the FAST telescope, the upper limit on the kinetic mixing can already
reach $10^{-12}$ for DPDM oscillation frequencies at $1-1.5$ GHz, which is
stronger than the cosmic microwave background constraint by about one order of
magnitude. Furthermore, large-scale interferometric arrays like LOFAR and SKA1
telescopes can achieve extraordinary sensitivities for direct DPDM search from
10 MHz to 10 GHz.
