A safety pin for fastening accessories is disclosed. The safety pin for fastening accessories, according to the present invention, comprises: a base part having a body in a longitudinal direction; a pin fastening part which is coupled to one end of the base part, and to which at least one pin extended in the longitudinal direction of the base part is fastened; a pin coupling part which is coupled to the other end of the base part, and which has a pin coupling groove to which the pin of the pin fastening part is inserted and coupled; and a loop button part which is coupled to the pin fastening part and the pin coupling part, is transformed by a force applied from the outside, and has a loop structure that can be restored to an original form by using internal elastic force, wherein the loop button part is transformed by a force pressed in a lateral direction of the base part and transfers a force in a mutually opposite direction to the pin fastening part and the pin coupling part, such that the pin fastening part and the pin coupling part are moved in an outward direction from the coupled points with the base part by the transferred force whereby the pin of the pin fastening part is separated from the pin coupling part.