In order to investigate the bond-slip performance of recycled aggregate concrete filled steel tubes （RACFST） in terms of the parent concrete strength grade， corrosion rate and expansion agent， the repeated push-out test of RACFST was carried out. The load-slip curve， energy consumption capacity， strain distribution and the influence of above three factors on the peak load of RACFST were studied. A computational model for bond strength was developed. The results show that the energy consumption capacity and strain distribution of odd times of the push-out test are greater than those of even times. The peak load increases with the strength of the parent concrete. With the increase of corrosion rate and expander content， the peak load increases first and then decreases， and decreases first and then increases. The bond strength calculation models based on the Rational and Expdec1 functions are highly reliable.