The invention discloses an indoor temperature regulating and controlling method, and relates to the technical field of temperature regulating or controlling methods. The indoor temperature regulating and controlling method comprises the following steps: inputting a target temperature on a central temperature controller of an indoor temperature regulating device; memorizing the target temperature by the controller; detecting whether an indoor environment has people or not by the central temperature controller; controlling the temperature regulating device to regulate indoor temperature by the central temperature controller according to the target temperature and outdoor temperature if the indoor environment does not have people so as to enable the indoor temperature to be maintained between the target temperature and the outdoor temperature; and regulating the temperature by the central temperature controller if the central temperature controller senses that the indoor environment has people so as to enable the indoor temperature to tend to the target temperature. By the method, consumption of energy can be realized under the condition that comfort level of a user is not affected. The indoor temperature regulating and controlling method is energy-saving and environment-friendly, and is wide in using prospect.