  We present the limits on photon to axionlike particle (ALP) coupling from the
10-year period observations of the TeV BL Lacertae blazar 1ES 1215+303 (with
redshift $z=0.130$). The contemporaneous gamma-ray spectra are measured by the
collaborations Fermi-LAT and VERITAS with five flux phases from 2008 to 2017,
including four low states and one flare. Using these flux phases, we show the
spectral energy distributions (SEDs) under the null/ALP hypotheses and set the
combined limit on ALP. The 95% $\rm C.L.$ combined limit set by 1ES 1215+303
with the 10-year gamma-ray data is roughly at the photon-ALP coupling constant
$g_{a\gamma} \gtrsim 1.5\times 10^{-11} \rm \, GeV^{-1}$ for the ALP mass
$5.0\times10^{-10} \, {\rm eV} \lesssim m_a \lesssim 1.0\times10^{-7} \, {\rm
eV}$.
