Abstract: Provided are a magnetic fluid composite for display use which enables visually recognizing a subtle shape caused by a spiking phenomenon and which can exhibit a color other than black, and a magnetic fluid composite display device. A magnetic fluid composite 1 for display use contains water 10, an oily magnetic fluid 20 and poorly magnetic light shielding pieces 30. The light shielding pieces 30 have a flake shape and include respectively hydrophilic layers 31, light shielding layers 33 and hydrophilic layers 35 that are laminated in the written order. The light shielding pieces 30 are arranged along the interface 1i between the water 10 and the oily magnetic fluid 20 so that the interface 1i between the water 10 and the oily magnetic fluid 20 is covered with a number of the light shielding pieces 30.