A fly repellent structure includes: an outer shell, at least one light refracting sheet, and a hanging rod. The outer shell has a hollow ring shape. At least one light refracting sheet is connected to the inner edge of the housing by a connecting member. One end of the hanging rod is connected to the outer edge of the outer shell, and extends a length from the outer edge of the outer shell to the outside. In the above, the at least one light refracting sheet is located on the side of the outer shell body through the connecting member, and the other end of the hanging rod member is connected to a supporting member. Based on the principle of flies 'compound eyes' sensitivity to light and shadow, through the above structure, the reflection of light and shadow and the position movement are achieved, so that the fly thinks that it is a natural enemy close, and then generates an instinctive reaction to stay away from danger.一種驅蠅器結構，包括有：外殼體、至少一光折射片以及外掛桿件。該外殼體為中空環形形狀。至少一光折射片以連接件連接於該外殼體內緣。該外掛桿件之一端連接於該外殼體外緣，自外殼體外緣向外側延伸一長度。上述中，該至少一光折射片藉由該連接件位於該外殼體側面，且該外掛桿件另一端與一支撐件相連。藉由蒼蠅複眼對光影敏感度的原理，再經由上述結構，達到光影的反射以及位置移動的情況，讓蒼蠅以為是天敵靠近，進而產生本能的反應來遠離危險。
