An impact tool which applies a torque and an impact force to a tip tool, comprising: a motor; a spindle rotated by the motor; an anvil (18, 118, 218, 318) to which the tip tool is attached; and a hammer (30. 130. 230. 330) which converts a toraue of the spindle into a torque and an impact force of the anvil (18, 118, 218, 318), wherein the hammer (30, 130, 230, 330) includes: a second pawl (30el, 30e2, 130el, 130e2, 130e3, 230el, 230e2, 230e3, 330el, 330e2, 330e3) to be engaged with a first pawl (18dl, 18d2, 118d1, 118d2, 118d3, 218dl, 218d2, 218 d3, 318dl, 318d2, 318d3) of the anvil (18, 118, 218, 318); a through-hole through which the spindle passes; a plurality of cam grooves (30al, 30a2) hollowed toward a radially outer side of the through-hole; a wall portion (30c1) provided between the plurality of cam grooves (30a1, 30a2) in a circumferential direction of the through-hole; and a bottom portion (30c2) positioned at a center portion of the cam groove in the circumferential direction of the through-hole, and characterized in that the second pawl (30e1, 30e2, 130el, 130e2, 130e3, 230el, 230e2, 230e3, 330el, 330e2, 330e3) in the circumferential direction of the hammer (30, 130, 230, 330) is provided inside a region of an inclined portion between the bottom portion (30c2) and the wall portion in the circumferential direction of the through-hole. a motor; a spindle rotated by the motor; an anvil (18, 118, 218, 318) to which the tip tool is attached; and a hammer (30. 130. 230. 330) which converts a toraue of the spindle into a torque and an impact force of the anvil (18, 118, 218, 318), wherein the hammer (30, 130, 230, 330) includes: a second pawl (30el, 30e2, 130el, 130e2, 130e3, 230el, 230e2, 230e3, 330el, 330e2, 330e3) to be engaged with a first pawl (18dl, 18d2, 118d1, 118d2, 118d3, 218dl, 218d2, 218 d3, 318dl, 318d2, 318d3) of the anvil (18, 118, 218, 318); a through-hole through which the spindle passes; a plurality of cam grooves (30al, 30a2) hollowed toward a radially outer side of the through-hole; a wall portion (30c1) provided between the plurality of cam grooves (30a1, 30a2) in a circumferential direction of the through-hole; and a bottom portion (30c2) positioned at a center portion of the cam groove in the circumferential direction of the through-hole, and a second pawl (30el, 30e2, 130el, 130e2, 130e3, 230el, 230e2, 230e3, 330el, 330e2, 330e3) to be engaged with a first pawl (18dl, 18d2, 118d1, 118d2, 118d3, 218dl, 218d2, 218 d3, 318dl, 318d2, 318d3) of the anvil (18, 118, 218, 318); a through-hole through which the spindle passes; a plurality of cam grooves (30al, 30a2) hollowed toward a radially outer side of the through-hole; a wall portion (30c1) provided between the plurality of cam grooves (30a1, 30a2) in a circumferential direction of the through-hole; and a bottom portion (30c2) positioned at a center portion of the cam groove in the circumferential direction of the through-hole, and characterized in that the second pawl (30e1, 30e2, 130el, 130e2, 130e3, 230el, 230e2, 230e3, 330el, 330e2, 330e3) in the circumferential direction of the hammer (30, 130, 230, 330) is provided inside a region of an inclined portion between the bottom portion (30c2) and the wall portion in the circumferential direction of the through-hole.