a main body, having a connection channel, a connecting hole formed on an external surface of the main body, and the connection channel and the connecting hole communicating to each other and provided for inserting an endoscope tube from the connecting hole into the connection channel;

an electrical connection driving part, installed in the main body, and having a plurality of first electrical connection points correspondingly disposed in the connection channel;

an electrical connection identification part, installed in the main body and configured to be adjacent with the electrical connection driving part, and the electrical connection identification part having a plurality of second electrical connection points correspondingly disposed in the connection channel;

an organ identification unit, installed in the main body and telecommunicatively coupled to the electrical connection identification part, and the organ identification unit having an organ comparison table stored therein, wherein when the endoscope tube is inserted from the connecting hole into the connection channel, the endoscope tube and the plurality of first electrical connection points are electrically conducted with each other to generate a driving signal, and the endoscope tube and a part or all of the second electrical connection points are electrically conducted with each other to generate a type signal; and the organ identification unit compares the type signal received with the organ comparison table to determine the organ type corresponding to the endoscope tube, and output an execution signal accordingly; and

a processing unit, installed in the main body and telecommunicatively coupled to the organ identification unit and the electrical connection driving part, such that after the execution signal and the driving signal are received, a result image is displayed according to the execution signal, wherein

the plurality of first electrical connection points comes with a quantity of three, and the plurality of second electrical connection points comes with a quantity of four, and the driving signal is a binary 3-bit code, and the type signal is a binary 4-bit code, wherein the driving signal has a code of 111, the type signal has a code with a bit code of 1 corresponding to the second electrical connection point in a conducted status and a bit code of 0 corresponding to the second electrical connection point in a non-conducted status, and the organ comparison table comprises a plurality of encoded data and a plurality of organ data to facilitate the organ identification unit to read and compare the code of the type signal with the plurality of encoded data to obtain the corresponding organ data, so as to generate the execution signal.