Provided is a functional seal with a good feeling of use that allows a functional material to be intimately and immovably acted on an important part of a human body even if the energy of the functional material is weak. SOLUTION: Fine particles 1 of a functional material having a positive effect on the human body are adhered to one side of a high-strength and ultrathin sealing base material 2 and covered with an adhesive 3 and further peelable. The functional sheet of the present invention is covered with a protective sheet 4. Further, a pressure-sensitive adhesive 3 mixed with fine particles 1 of a functional material having a positive effect on the human body is adhered to one side of a high-strength and ultra-thin sealing substrate 2 and covered with a peelable protective sheet 4. Also good. [Selection] Figure 2【課題】機能性材料のエネルギーが微弱であっても人体の要所に密接かつ不動に作用させられるような使用感の良い機能性シールを提供する。【解決手段】人体に対し好作用を及ぼす機能性材料の微粒子1を高強度かつ極薄のシール基材2の片面に全面付着させるとともにその上を粘着剤3で覆い、さらにその上を剥離性保護シート4で覆って、本考案の機能性シールとする。また人体に対し好作用を及ぼす機能性材料の微粒子1を混在させた粘着剤3を高強度かつ極薄のシール基材2の片面に全面付着させ、その上を剥離性保護シート4で覆ってもよい。【選択図】図2