A direct-drive electric outboard engine , comprising an external rotor mechanism , a stator mechanism , a first end cap , a second end cap , a first fairwater and a second fairwater and a controller module , wherein the external rotor mechanism comprises an external rotor and an impeller ; the external rotor is located outside the stator mechanism ; the impeller is located outside the external rotor ; the first end cap and the second end cap are respectively provided at two ends of the stator mechanism ; the first fairwater is mounted at one end of the stator mechanism ; and the second fairwater is mounted at the other end of the stator mechanism , wherein: a first seal is provided between the first end cap and the stator mechanism , a second seal is provided between the second end cap and the stator mechanism , and the first seal and the second seal are realized by means of an oil seal; and the second fairwater is provided to be movable with respect to the stator mechanism , and the second fairwater is configured to be rotatable along with the external rotor mechanism ; and: a first controller mounting area is provided inside the first fairwater , and the controller module is located in the first controller mounting area , or a second controller mounting area is provided inside the second fairwater , and the controller module is located in the second controller mounting area . wherein the external rotor mechanism comprises an external rotor and an impeller ; the external rotor is located outside the stator mechanism ; the impeller is located outside the external rotor ; the first end cap and the second end cap are respectively provided at two ends of the stator mechanism ; the first fairwater is mounted at one end of the stator mechanism ; and the second fairwater is mounted at the other end of the stator mechanism , wherein: a first seal is provided between the first end cap and the stator mechanism , a second seal is provided between the second end cap and the stator mechanism , and the first seal and the second seal are realized by means of an oil seal; and the second fairwater is provided to be movable with respect to the stator mechanism , and the second fairwater is configured to be rotatable along with the external rotor mechanism ; and: a first controller mounting area is provided inside the first fairwater , and the controller module is located in the first controller mounting area , or a second controller mounting area is provided inside the second fairwater , and the controller module is located in the second controller mounting area . a first seal is provided between the first end cap and the stator mechanism , a second seal is provided between the second end cap and the stator mechanism , and the first seal and the second seal are realized by means of an oil seal; and the second fairwater is provided to be movable with respect to the stator mechanism , and the second fairwater is configured to be rotatable along with the external rotor mechanism ; and: a first controller mounting area is provided inside the first fairwater , and the controller module is located in the first controller mounting area , or a second controller mounting area is provided inside the second fairwater , and the controller module is located in the second controller mounting area . a first controller mounting area is provided inside the first fairwater , and the controller module is located in the first controller mounting area , or a second controller mounting area is provided inside the second fairwater , and the controller module is located in the second controller mounting area . <EOS>