The utility model relates to a flash buoy device, which comprises a buoy body, a microswitch, a battery and a flash lamp. The buoy body is provided with a microswitch, which is tied together with the fishing line. When the fish is hooked, the flash lamp lights up through the action of the microswitch through the power supply of the battery, so that the fisherman can know the message that the fish has been hooked.一種閃光浮標裝置，包括有浮標本體、微動開關、電池及閃光燈所組成，該浮標本體內裝置有微動開關，微動開關與釣線繫缚在一起，當魚上鉤時藉由電池供應電源透過微動開關之動作讓閃光燈亮起，使釣魚者知道魚已經上鉤之訊息。
