To solve a problem of pressure in a counter-distribution groove direction applied to a distribution shaft at the time of fuel injection by pressure from a distribution groove in a conventional distribution type fuel injection pump to generate oil film breakage between an outer circumferential surface of the distribution shaft and a distribution shaft sleeve to cause contact seizure between the distribution shaft and the distribution shaft sleeve.

A passage 26 is formed through the distribution groove 23 to radially penetrate the distribution shaft 10, a balance port 32 is opened at an end part on the counter-distribution groove 23 side of the passage 26, the balance port 32 is closed by a wall surface of the distribution shaft sleeve 11 at the time of the fuel injection, and it is communicated with a suction passage 27 connected to a fuel gallery 3 when sucking fuel.