is a pandemic that is happening all over the world. The use of masks, keeping a distance and monitoring body temperature are ways that can be done to prevent the transmission of the Covid-19 virus. However, unfortunately, people often don't obey this rule because they underestimate the Covid-19 problem. Based on this, the author tries to develop a system that is able to detect and monitor the use of masks and human body temperature automatically. The design of this detection system uses a webcam connected to a raspberry pi, a GY-906 Temperature Sensor, and Proximity Sensor HC-SR04 that is connected with arduino nano. The detection system will detect whether the user is wearing a mask or not, and detect whether the user's body temperature is normal or not. The output of this detection system is a display on the monitor and LCD as well as other outputs, such as LEDs and Buzzers. From the test results of the device, it is found that the device can work well