  Two-dimensional transition metal dichalcogenide PdTe$_2$ recently attracts
much attention due to its phase coexistence of type-II Dirac semimetal and
type-I superconductivity. Here we report a 67 % enhancement of superconducting
transition temperature in the 1T-PdSeTe in comparison to that of PdTe2 through
partial substitution of Te atoms by Se. The superconductivity has been
unambiguously confirmed by the magnetization, resistivity and specific heat
measurements. 1T-PdSeTe shows type-II superconductivity with large anisotropy
and non-bulk superconductivity nature with volume fraction ~ 20 % estimated
from magnetic and heat capacity measurements. 1T-PdSeTe expands the family of
superconducting transition metal dichalcogenides and thus provides additional
insights for understanding superconductivity and topological physics in the
1T-PdTe$_2$ system
