The invention relates to the field of security and protection systems, and discloses a security and protection system of a residential parking lot. The security and protection system of the residential parking lot comprises a control storage module, a human body detection module, an alarm module, a sound collection module and a communication module; the control storage module is used for receivinginformation, processing the information, outputting control information, and storing the information; the human body detection module is used for detecting a person in a parking lot, determining theposition of the person, and outputting the person information to the control storage module; the alarm module is used for receiving the information transmitted by the control storage module, and outputting an alarm signal; the sound collection module is used for receiving a sound signal in the parking lot, and transmitting the sound signal to the control storage module; and the communication module is used for receiving the information output by the control storage module, and sending the information. The security and protection system of the residential parking lot in the invention has the effect of reducing life and property loss of owners.