Disclosed is a communication protocol for collecting data from household medical devices, the protocol including the steps of: transmitting an initialization packet in order to detect a household medical device capable of communication, and receiving a reply packet including device type/id information from the device; asking the device for a number of stored data items, and receiving a reply; and asking the device for measurement data, and receiving at least one data item from the device, wherein each of the packets for the communication includes a plurality of fields including start code, size, command, device type, device id, and checksum. Accordingly, in data exchange between a Home gateway and a household medical device, a compatible protocol is employed, so that the Home gateway can receive measurement data from various types of medical devices, the protocol can be applied to various manufacturers' products, and the protocol has an extensibility of application even to newly developed medical devices in the future, which enables users to easily select medical devices.