PURPOSE: To perform a safe repulsion of a victim or to perform a safe catching and to arrest a criminal by a method wherein a plurality of springs are connected by connector threads in a crossed state and further an anchor is connected by the connector threads and connected to a cooperating thread.

CONSTITUTION: Spring anchors 10 and 10 within an anchor A frame cooperated with a connector part 15 of crossing connector threads 14 cooperating with springs 1 to 3 through a connector thread 16 are overlapped in sequence within an advancing double-cylinder with an appropriate holding angle and compressed, thereby a repelling force of it is utilized to generate a self-flying holding and catching function. The flying holding springs expand the crossed connector threads in response to the holding angle, strike against a target item 17. The springs 1 to 3 are crossed around a target human body, the crossing connector threads 14 are twined around under a utilization of helical form of the springs as a connector, and then a resilient force of the springs may act against the human body to hold it safely. When the arrested person pulls the spring anchor, the spring anchor may act against the contacted item to strengthen a holding function. If a metallic spring is used, it may produce a metallic sound, and it twins around to enforce an engagement movement and further the anchor engages with a building structure so as enforce an action of the anchor.