A pushing suspending device of a measuring tape has a housing, a rule and a suspending device, with the rule curled within the housing, and protecting disk covers installed on the two sides of the rule. The suspending device includes a contacting pressing piece and a suspending switch. One end of the contacting pressing piece is embedded within the housing, and another end of which is formed with a cambered contacting plate. A pushing key is projected upwards from the center of the plate. An opening is located on the lower end of the housing to accommodate the suspending switch. The front end of suspending switch has a through hole for the rule, while the two sides have resisting portions for resisting against the protecting disk covers. When the rule is pulled, if the suspending switch is pushed, then the movement of the rule may be suspended effectively.