The invention provides a multifunctional attendance checking all-in-one machine and a multifunctional attendance checking system. The multifunctional attendance checking machine comprises a communication module, a display screen and a biological characteristic acquisition device integrated on the display screen, wherein the attendance checking machine is communicated with a server through the communication module to receive an information publishing task, an attendance checking task and an attendance checking result, the display screen is integrated with the biological characteristic acquisition device, can display multimedia information corresponding to the information publishing task when receiving the information publishing task, also can acquires biological characteristics of the userthrough the biological characteristic acquisition device in response to the attendance checking task, and sends the biological characteristics to the server to realize the attendance checking functionbased on biological characteristic recognition. Therefore, the multifunctional attendance checking all-in-one machine disclosed by the invention integrates a multimedia advertising machine and an attendance checking machine, and is rich in function and convenient to popularize.