The utility model discloses a control cable heart yearn turn-buckle, comprising a base plate, the one end of bottom plate is equipped with cable clamping mechanism, the both sides of bottom plate are equipped with the riser, establish the slip guide slot on the riser, it is equipped with the running block to slide in the slip guide slot, the running block be connected with with the relative mechanism of acting as go-between that sets up of cable clamping mechanism, install on the riser and be located the standing block of the bottom plate other end, the standing block is connected with the receipts rope sheave, the receipts rope sheave is connected with and is located the rotation handle in the riser outside. Through cable clamping mechanism presss from both sides the fastening with control cable to be decided, adorns the control cable heart yearn on acting as go-between the mechanism, operate rotate the handle, drive the mechanism's control cable heart yearn of flare-outing of acting as go-between. The utility model discloses convenient to use saves strength and time, and the heart yearn is flare-outed effectually, has improved working effect greatly, has reduced operating personnel's intensity of labour.