Parking assistance method and parking assistance device

A parking assistance device that performs automated travel of a vehicle based on a parking operation performed in past, the parking assistance device comprising:

• a processor;
• and
• a memory including instructions that, when executed by the processor, cause the processor to perform operations, the operations comprising:
• acquiring a teacher path based on a travel path during the parking operation performed in the past, and acquiring vehicle operation information regarding a first operation of at least one vehicle accessory of a blinker or a side mirror in the vehicle during the parking operation performed in the past;
• causing the memory to store teacher data including the teacher path and the vehicle operation information;
• and
• performing a second operation of the vehicle accessory performed in the past, based on the teacher data in automated parking in which the vehicle is moved along the teacher path.