This thesis studies the design and created a leak detection of microwave wave to fix leaks from microwave ovens microwave wave. By this project aims to use the microcontroller era with detector circuit to pour character to a dipole antenna. The working of the machine to use the antenna frequency 2.45 GHz lokluen, polyphenols, Dai received waves microwaves, connected with the cycle of good character, good at pouring khasanyan antenna to get a pour pressure and sends a voltage control circuit analogue of leg to display the measured values to the LCD screen, the values at the.From measurement to measurement is to let people know that there is a wave microwave oven leaked? including beep when microwave waves detected in the a dangerous cut and the functioning of the microwave oven immediately. Operation of the machine can leak measurement of microwave waves meet the required standards.