A gripping force measuring device includes a housing having a pressure detecting device and having a handle portion for being held by a user, a trigger attached to the housing and engaged with the pressure detecting device for applying a pressing force against the pressure detecting device when the trigger is forced toward the pressure detecting device. A displayer may be used for displaying the pressing force applied against the pressure detecting device. The trigger includes an arm having a free end extended out of the housing, and a lever is attached to the housing and includes a free end extended out of the housing for allowing the arm to be gripped and forced toward the lever.