Pre-tightening force regulation and control mechanism and electronic hoist scale

The invention relates to a pre-tightening force regulation and control mechanism and an electronic hoist scale. The pre-tightening force regulation and control mechanism is used for being arranged between a first hook and a second hook of the electronic hoist scale, the first hook is used for being connected with a hoisting device, the second hook is used for being connected with a hoisted object, and the pre-tightening force regulation and control mechanism comprises a shell, a force measuring mechanism and a tension mechanism. The force measuring mechanism and the pulling force mechanism are both arranged in the shell, the force measuring mechanism is used for being connected with the second hook, the force measuring mechanism comprises a force sensor, and the force sensor is configured to be used for measuring pulling force borne by the second hook. The tension mechanism comprises a tension piece and a driving assembly, the driving assembly is connected to the force measuring mechanism, the tension piece i