The multifunctional floating mark includes floating mark body, cell and light source, and features that the floating mark body has time regulator in the top, cell below the time regulator for supplying energy, information processor below the cell, LED on the information processor installing board, colorless partition wall below the LED to prevent damage of electronic elements caused by water, liquid storing chamber below the partition wall, buoyancy regulating valve in the low end to regulate the buoyancy of the liquid storing chamber and casing of colorless transparent material. The multifunctional floating mark has adjustable lighting time and buoyancy, replaceable cell and lighting fish shoal inducing function, and is suitable for fishing tackle.