To provide a cutting tool made of a cermet having both of excellent chipping resistance and abrasion resistance.

R honing 4 is formed on a cutting blade 3 of a TiCN based cermet base body 2 comprising a binding phase composed of Co and/or Ni and a hard phase composed of carbonitride of 4a, 5a, and 6a group metals in Periodic Table including Ti. The average particle diameter of the hard phase inside the cermet base body 2 is ≤ 1 μm. When a honing amount on the rake face 5 side of the R honing 4 is made as (a) and a honing amount on the flank 6 side of the R honing 4 is as (b), the cutting tool 1 made of a cermet is made to satisfy formula of a/b = 1.3-1.5.