The invention discloses a comprehensive detection method of anchoring status of a prestress anchor cable. By detecting the anchor length, grouting plumpness, prestress and corrosive degree of the prestress anchor cable, the method conducts the contrastive analysis and comprehensive analysis of a single index and consequently analyzes the anchorage quality and safety performance of the prestress anchor cable. The detection method has great significance to control the construction quality of newly built anchoring engineering and grasp the operating status and safety of the existing anchoring engineering.