Abstract: An inquiry processing device includes: an automatic door information recorder that records information including past inquiry information from a customer regarding an automatic door, an operation situation, and quality information; a countermeasure presenter that presents recommended countermeasure information corresponding to a new inquiry regarding the automatic door by an extraction algorithm; a feedback information receiver that receives feedback information on whether or not a defect of the automatic door has been removed by taking measures on the basis of the recommended countermeasure information; a learner that updates the extraction algorithm of the countermeasure presenter on the basis of the feedback information; and a countermeasure presentation determiner that causes the countermeasure presenter to present new recommended countermeasure information by the extraction algorithm updated by the learner, when it is determined that the defect of the automatic door has not been removed.