An information processing method executed by a computer, the information processing method comprising: acquiring (S1,S2;S91,S92) a sleep state of a person existing in space; acquiring (S7;S96) detection data output from a sensor that detects entry of an object into the space; performing (S10) a first determination to determine whether or not the sleep state changes to awakening within a predetermined time from a time point at which the object is estimated to enter the space based on the sleep state and the detection data; generating (S13;S111,S112), in association with the sleep state before the time point, awakening information based on a result of the first determination, the awakening information for determining possibility that the person is awakened by entry of the object in a case where the person is in the sleep state before the time point; wherein the generation of the awakening information includes calculating the possibility of awakening of the person based on a result of the first determination, and generating the calculated possibility of awakening as the awakening information; and (i) presenting (S5) the awakening information associated with the sleep state via a presentation device, or (ii) executing (S94,S104), based on the awakening information associated with the sleep state, home appliance control processing that is at least one of controlling a home appliance in the space, inquiring whether or not to control the home appliance via a presentation device, and presenting recommendation for controlling the home appliance via the presentation device. acquiring (S1,S2;S91,S92) a sleep state of a person existing in space; acquiring (S7;S96) detection data output from a sensor that detects entry of an object into the space; performing (S10) a first determination to determine whether or not the sleep state changes to awakening within a predetermined time from a time point at which the object is estimated to enter the space based on the sleep state and the detection data; generating (S13;S111,S112), in association with the sleep state before the time point, awakening information based on a result of the first determination, the awakening information for determining possibility that the person is awakened by entry of the object in a case where the person is in the sleep state before the time point; wherein the generation of the awakening information includes calculating the possibility of awakening of the person based on a result of the first determination, and generating the calculated possibility of awakening as the awakening information; and (i) presenting (S5) the awakening information associated with the sleep state via a presentation device, or (ii) executing (S94,S104), based on the awakening information associated with the sleep state, home appliance control processing that is at least one of controlling a home appliance in the space, inquiring whether or not to control the home appliance via a presentation device, and presenting recommendation for controlling the home appliance via the presentation device. (i) presenting (S5) the awakening information associated with the sleep state via a presentation device, or (ii) executing (S94,S104), based on the awakening information associated with the sleep state, home appliance control processing that is at least one of controlling a home appliance in the space, inquiring whether or not to control the home appliance via a presentation device, and presenting recommendation for controlling the home appliance via the presentation device. <EOS>