A pipe joint, comprising: a spigot of a first pipe; a socket of a second pipe, the spigot of the first pipe being inserted into the socket of the second pipe; a lock ring-accommodating groove formed in an inner circumference of the socket; a lock ring accommodated in the lock ring-accommodating groove; and an engaging part formed in an outer circumference of the spigot, the engaging part being formed at a position receding in the separation direction of the spigot from a distal end of the spigot, wherein the engaging part is engageable with the lock ring from a back side of the socket in a separation direction of the spigot to prevent the spigot from separating from the socket, a bending suppressing member for restricting the socket and the spigot in a bending direction is provided between the inner circumference of the socket and the outer circumference of the spigot in a range between the distal end of the spigot and the engaging part, an expansion/contraction suppressing member for restricting the socket and the spigot in a pipe axis direction is provided between the distal end of the spigot and a back end part of the socket, and the outer diameter of the expansion/contraction suppressing member is larger than the outer diameter of the spigot, one end face of the expansion/contraction suppressing member in the pipe axis direction protruding as a step to the outside in the pipe radial direction from the outer circumference of the spigot between the distal end of the spigot and a back end part of the socket, characterized in that under the condition that the engaging part engages with the lock ring from the back side of the socket in a separation direction of the spigot and the expansion/contraction suppressing member inhibits the spigot from moving in the pipe axis direction with respect to the socket thus restricting expansion/contraction of the pipe joint, the expansion/contraction suppressing member inhibits the bending suppressing member from deviating in the pipe axis direction through between the inner circumference of the socket and the outer circumference of the spigot and slipping out to between the distal end of the spigot and the back end part of the socket. a spigot of a first pipe; a socket of a second pipe, the spigot of the first pipe being inserted into the socket of the second pipe; a lock ring-accommodating groove formed in an inner circumference of the socket; a lock ring accommodated in the lock ring-accommodating groove; and an engaging part formed in an outer circumference of the spigot, the engaging part being formed at a position receding in the separation direction of the spigot from a distal end of the spigot, wherein the engaging part is engageable with the lock ring from a back side of the socket in a separation direction of the spigot to prevent the spigot from separating from the socket, a bending suppressing member for restricting the socket and the spigot in a bending direction is provided between the inner circumference of the socket and the outer circumference of the spigot in a range between the distal end of the spigot and the engaging part, an expansion/contraction suppressing member for restricting the socket and the spigot in a pipe axis direction is provided between the distal end of the spigot and a back end part of the socket, and the outer diameter of the expansion/contraction suppressing member is larger than the outer diameter of the spigot, one end face of the expansion/contraction suppressing member in the pipe axis direction protruding as a step to the outside in the pipe radial direction from the outer circumference of the spigot between the distal end of the spigot and a back end part of the socket,