異經(jīng)補母瀉子是指取與病經(jīng)有相生關(guān)系的異經(jīng)五腧穴，施行補母瀉子法,。例如：腎經(jīng)虛證,，“虛則補其母”，可取與腎經(jīng)有相生關(guān)系的肺經(jīng)(腎屬水,，肺屬金,，金生水，肺經(jīng)為腎經(jīng)之母),，在肺經(jīng)經(jīng)氣流注時辰剛過的卯時取肺經(jīng)的母穴輸土太淵(土生金)及肺經(jīng)的本穴經(jīng)渠補之,。又如：大腸經(jīng)實證，“實則瀉其子”,，可取與大腸經(jīng)有相生關(guān)系的膀胱經(jīng)(大腸經(jīng)屬金,，膀胱經(jīng)屬水，金生水,，膀胱經(jīng)為大腸經(jīng)之子)在膀胱經(jīng)經(jīng)氣方盛之壬時取膀胱經(jīng)的子穴輸木束骨(水生木)及膀胱經(jīng)的本穴通谷瀉之,。余可類推。