The invention discloses a discrete type property temporary storage box based on the serial port communication technology, which comprises a box body, an electronic lock and a circuit part, wherein the box body is provided with a box door, the electronic lock is arranged on the box door, the circuit part comprises a central processing module, a state detection module, a data uploading and downloading module and an electronic lock control module, the state detection module consists of an isolation power supply module, an incoming call sensing module and a power supply state detection module, and the electronic lock control module consists of a lock state detection module and a lock driving module. The discrete type Internet bar temporary storage box is directly connected with a computer of an Internet surfer, the intelligent report of the incoming call of a mobile phone can be realized through functional modules such as an incoming call detection module and the like, and the invention provides a safe placing space on a table top for properties of the Internet surfers in the Internet bar.