Cockroaches have a flat, dark brown body and are usually of medium size. Antennas are long and filiform, and compound eyes are developed. The front wing is cortical, and the rear wing is membranous. The size of the front and rear wings is basically the same, covering the rear of the abdomen.

Cockroach is one of the oldest insects on the planet. It once lived in the same era as dinosaurs, trilobites, dungeon fish and other ancient creatures. Even before the birth of the first dinosaur on land 1 100 million years.

According to fossil evidence, in the Silurian period about 400 million years ago, cockroaches in primitive times appeared on the earth. The cockroaches we found are fossils or cockroaches found in coal and amber, but their vitality and adaptability have become more and more tenacious, and they have been widely distributed in every corner of the world until today.