The robot not only improves home security, prevents crimes and intrusions, provides accurate safety assessments, provides evidence and tracking capabilities, but also promotes the development of safety technology. The research significance of these aspects plays an important role in protecting family safety, community peace and promoting social security and progress. In terms of home security improvement, the robot installed with the millimeter wave imaging device can improve the security of the home in the anti-theft door. Family members can judge the visitor's intention and potential threat in time by observing whether there are dangerous articles under the clothes or hands of strangers outside the door, and take corresponding defensive measures or call the police for help to reduce safety risks. In the prevention of crime and invasion, the robot can effectively prevent crime and invasion behavior. If a stranger outside the door is carrying dangerous items, such as knives or guns, the device can detect and alert family members in time to prevent potential criminal activity or intrusion. Traditional safety assessment usually relies on subjective judgment and limited information, while millimeter wave imaging robots provide more objective data. Family members can make more accurate judgments by observing the images, and improve the accuracy and convenience of safety assessment. In addition, millimeter wave imaging robots are often used in conjunction with surveillance systems to record the behavior and characteristics of strangers outside the door, providing evidence that can be used for tracking and investigation. This is of great significance for crime prevention and improving the rate of crime detection. The products are mainly composed of IWR6843 radar chips and fully programmable Zynq7000 processors. The radar chip forms 12 virtual antenna arrays through MIMO, and actively obtains the spatial position, velocity, reflection intensity and other information of the target by transmitting and receiving low-power frequency modulated continuous (FMCW) millimeter waves. The radar echo signal is connected to the FPGA SoC through the SPI interface of up to 40Mbps, and the high-speed radar raw signal is processed by the MIMO-SAR imaging to accelerate the nuclear processing, and finally the information is displayed in real time through the HDMI display.