An operable and closable body-opening and closing apparatus includes: a rotary drive member configured to be rotationally driven by a driving force of a drive section; a driving-force transmission member configured to be driven by the rotary drive member and thereby move in a rotation axis direction of the rotary drive member; a biasing member disposed on an outer periphery of the driving-force transmission member and configured to give a biasing force to the driving-force transmission member in the rotation axis direction; and a guide member disposed on an outer periphery of the biasing member and configured to guide the driving-force transmission member. The guide member includes a guide portion configured to guide the driving-force transmission member in the rotation axis direction while restricting rotation of the driving-force transmission member, and the driving-force transmission member includes a guided portion configured to be guided by the guide portion.