The electronic cockroach trap includes a box, in which baits are positioned to attract cockroaches into the trap. Then, a high tension is cyclically applied under control by an electronic circuit, so as to kill the caught cockroaches and disinfect the trap. The electronic cockroach trap is durable for repeated use, low power consuming, safe and sanitary for use, and therefore an ideal product for protecting environment. Features: 1. Cockroaches are trapped in the box, and electrically killed and disinfected at the same time to prevent propagation of disease via cockroaches. 2. No insecticide is used, and no environmental pollution would be caused. 3. Thoroughly kills the cockroaches, including the eggs thereof, and is therefore superior to any other cockroach-killing products. 4. High tension and low current are intermittently and cyclically applied, so that only a very low power of 0.48kWh/month is consumed. The trap is therefore safe and economical for use. 5. Low entrance design allows the trap to be placed at any position easy to catch cockroaches. 6. Stainless steel electric shock plate is easy to clean and maintain. 7. May be battery-powered and positioned at any place without a power supply to catch cockroaches. 8. Pleasant trap appearance allows easy cockroaches killing without pressure.