A propeller shaft configured to transmit a rotation force from a power source of a vehicle to a wheel of the vehicle, the propeller shaft comprising: a cylindrical boot member including a protruding portion protruding in a radially inward direction with respect to a rotation axis of the boot member, and a boot band tightening portion provided on a side opposite to the protruding portion in the radial direction, and recessed toward the rotation axis; a shaft member which is inserted into the boot member, and which includes a first outside diameter portion, a groove portion, and a second outside diameter portion which are disposed in this order from a tip end portion of the shaft member in the rotation axis direction, the first outside diameter portion having an outside diameter greater than an inside diameter of the protruding portion, and the groove portion having an outside diameter smaller than the outside diameter of the first outside diameter portion, and receiving therein the protruding portion, and the second outside diameter portion having an outside diameter greater than the outside diameter of the first outside diameter portion; and a boot band tightened on the boot band tightening portion, wherein the shaft member includes a first connection portion connected with a groove bottom portion of the groove portion and the first outside diameter portion, and a second connection portion connected with the groove bottom portion of the groove portion and the second outside diameter portion, a length from the rotation axis to the first connection portion in the radial direction is gently shorter from the first outside diameter portion toward the groove bottom portion of the groove portion in the rotation axis direction, and a length from the rotation axis to the second connection portion in the radial direction is gently longer from the groove bottom portion of the groove portion toward the second outside diameter portion in the rotation axis direction, wherein the boot member includes a first abutment portion abutted on the first connection portion and a second abutment portion abutted on the second connection portion, and a length from the rotation axis to the first abutment portion is shorter than a length from the rotation axis to the second abutment portion. a cylindrical boot member including a protruding portion protruding in a radially inward direction with respect to a rotation axis of the boot member, and a boot band tightening portion provided on a side opposite to the protruding portion in the radial direction, and recessed toward the rotation axis; a shaft member which is inserted into the boot member, and which includes a first outside diameter portion, a groove portion, and a second outside diameter portion which are disposed in this order from a tip end portion of the shaft member in the rotation axis direction, the first outside diameter portion having an outside diameter greater than an inside diameter of the protruding portion, and the groove portion having an outside diameter smaller than the outside diameter of the first outside diameter portion, and receiving therein the protruding portion, and the second outside diameter portion having an outside diameter greater than the outside diameter of the first outside diameter portion; and a boot band tightened on the boot band tightening portion, wherein the shaft member includes a first connection portion connected with a groove bottom portion of the groove portion and the first outside diameter portion, and a second connection portion connected with the groove bottom portion of the groove portion and the second outside diameter portion, a length from the rotation axis to the first connection portion in the radial direction is gently shorter from the first outside diameter portion toward the groove bottom portion of the groove portion in the rotation axis direction, and a length from the rotation axis to the second connection portion in the radial direction is gently longer from the groove bottom portion of the groove portion toward the second outside diameter portion in the rotation axis direction, wherein the boot member includes a first abutment portion abutted on the first connection portion and a second abutment portion abutted on the second connection portion, and a length from the rotation axis to the first abutment portion is shorter than a length from the rotation axis to the second abutment portion.