Assembled type magnetic ring, also card buckle type magnetic ring, buckle type magnetic ring, clip buckle type magnetic ring, clip buckle magnetic ring, or is Assembly type magnetic ring, is ferrite magnetic ring series in the of a. its role equivalent to low pass filter, better to solution has power line, signal line and connection device of high frequency interference business problem, and has using simple, convenient, effective, occupied space is unlikely to, series advantages, with assembled type magnetic ring to business electromagnetic interference (EMI) is economic simple and has effect of method.