The invention relates to a parallel clustered lead rectangularity device. The parallel clustered lead rectangularity device comprises a main body which is in a hollow structure; a bushing which is used for performing rectangularity on parallel leads is arranged inside the main body; the bushing which is in an hollow structure is fixed inside the main body; the main body is provided with a handle and a pedal support which are convenient to operate; the main body is also provided with a nylon cable tie which is used for tightening the parallel leads. During a utilization process, the leads penetrate the device from a lead inlet of the main body, then the leads sequentially penetrate a lead inlet and a lead rectangularity opening of the bushing and are discharged through a lead outlet in the main body, the lead is discharged from the lead outlet after being performed on rectangularity, a technical staff only needs to tighten the leads after rectangularity through nylon cable tie pincers matching with the nylon cable tie, the lead rectangularity operation is convenient, and the leads are required to be pulled out from the lead outlet.