  Very recently, NiTe2 has been reported to be a type II Dirac semimetal with
Dirac nodes near the Fermi surface. Furthermore, it is unveiled that NiTe2
presents the Hall Effect, which is ascribed to orbital magnetoresistance. The
physical properties behavior of NiTe2 under high pressure attracts us. In this
paper, we investigate the electrical properties of polycrystalline NiTe2 by
application of pressure ranging from 3.4GPa to 54.45Gpa. Superconductivity
emerges at critical pressure 12GPa with a transition temperature of 3.7K, and
Tc reaches its maximum, 6.4 K, at the pressure of 52.8GPa. Comparing with the
superconductivity in MoP, we purposed the possibility of topological
superconductivity in NiTe2. Two superconductivity transitions are observed with
pressure increasing in single crystal.
