The invention discloses an in-home elderly care method. Sensors are concealed and installed in dwellings of in-home elderly, and each sensor collects use information of each device and sends the use information to a processor; the processor establishes an action and activity information model of the in-home elderly based on the use information; the processor determines whether or not action and activity information of the in-home elderly meets a preset condition based on the action and activity information model; when the action and activity information meets the preset condition, the processor automatically generates first alarm information and sends the first alarm information to a monitoring end. According to the method, the sensors are concealed and installed in the dwellings, which does not affect the daily life of the in-home elderly, does not cause discomfort of the elderly, does not infringe the privacy of the elderly and does not need too much attention of personnel, the elderly do not need to wear monitoring equipment all the time, thereby achieving unbonded all-weather intelligent care of the in-home elderly and reducing labor costs, and the price is relatively cheaper.