The utility model provides a chain block deviation correcting device. It includes four anchor steelframes, four couples and two zip fasteners, the anchor steelframe is the mouth font structure of being made by the reinforcing bar, four the mode settings of anchor steelframe in order to keep flat, and roof beam outer end surface both sides position and side block case roof beam outer end surface both sides position are watered hanging in lower part pre -buried fixing respectively, fixed couple in inside of every anchor steelframe, article two, the zip fastener is with criss -cross mode setting, the both ends of every zip fastener respectively with install hang water the roof beam on couple and the side block case roof beam of certain one side a couple rear end of opposite side be connected. The utility model discloses the advantage: easy operation discovers the deviation adjustment of can rectifying at any time. The manual work can be installed, operated, demolish and need not mechanical input, but therefore reduce cost. Simple structure to the equal circulated use of most components, but consequently reduce cost, application scope is wide. Need not to take the roof beam body, back space, do not hinder and carry out other constructions, guaranteed going on in order of engineering effectively.