The present invention relates to an interdental brush, which comprises plural strands of metal wires with brush filaments being tangled as a brush head, a grip portion, a soft layer or a flexible layer. The brush head is connected with the grip portion for users to hold by hands, and the soft layer or flexible layer is covered or wrapped on the surface of the metal wires. As a result, this interdental brush can pass through the crevices between teeth to move back and forth, and the soft layer or flexible layer with softness can show a massage effect when touching the users teeth or gums to achieve the main purpose of protecting teeth and gum.本發明係有關於一種牙間刷,其主要由數股金屬線結繞刷毛而形成刷頭部,而刷頭部再導接一供握持的握柄部,其係於金屬線表面披覆或包覆有具柔軟性的軟質層或彈性層;藉此,讓牙間刷通過伸於齒縫間來回刷動時,其軟質層或彈性層碰觸牙齒或牙齦,具有柔軟性與按摩效果,不會傷及牙齒及牙齦,達到保護牙齒、牙齦的設計與功效者。