A pod propulsion device includes: a pod configured to be disposed in water; a rotation shaft supported by the pod to be rotatable about a predetermined axis and having an end portion projecting out from the pod; a screw fixed to the end portion of the rotation shaft; an electric motor installed in the pod to rotationally drive the rotation shaft; multiple guide blades integrally formed on the pod to be arranged at intervals in a circumferential direction of the pod, each guide blade extending out radially from an outer surface of the pod; and a cooling circuit for cooling the electric motor, wherein the cooling circuit includes a cooling liquid passage formed to pass through an interior of at least one of the guide blades.