A snap button includes a male retaining member and a female retaining member. The male retaining member includes a base, a hollow cylinder, and at least one protrusion portion. The hollow cylinder is disposed on the base, the at least one protrusion portion is disposed on the base and at a periphery of the hollow cylinder. The female retaining member includes a main body which has a hollow tube body. The hollow cylinder is housed through the hollow tube body.本創作揭示一種扣接結構,其包括一腳扣及一母扣。腳扣具有一基座、一中空柱體及至少一突出部,其中中空柱體設置於基座上,至少一突出部設置於基座上且設置於中空柱體的周圍。母扣具有一本體,本體具有一中空管體。其中,中空柱體穿設於中空管體內。本創作另揭示一種具有提升導電穩定性之扣接結構的生理訊號偵測帶,其電極單元設置於基座上,且電極單元位於腳扣與母扣之間,其中至少一突出部刺入電極單元中。L‧‧‧扣接結構1‧‧‧腳扣11‧‧‧基座111‧‧‧第一表面112‧‧‧第二表面113‧‧‧貫穿孔洞12‧‧‧中空柱體13‧‧‧突出部131‧‧‧第一側邊132‧‧‧第二側邊133‧‧‧端點2‧‧‧母扣21‧‧‧本體24‧‧‧彈性元件
