The invention belongs to the technical field of machinery and discloses a twisted wire encapsulating device, wherein the top of a control electric box is provided with a tape translation servo motor;one end of the transmission shaft is connected to the tape translation servo motor; a limit block is fixed on the top of the control electric box; a slide rail is fixed to one side of the limit block;the bottom of a lift rod is fixed to the top of the control electric box, and the lift rod is disposed at one side of the slide rail; a transverse rod is disposed at one side of the slide rail, the lifting rod extends through the transverse rod, and one end of the transverse rod slides up and down on one side of the sliding rail; a cutting tape mechanism is disposed on the top of the lifting rodand slides up and down on one side of the slide rail; and one side of a synchronous rotary motor is connected to a wire tail clamping mechanism. The twisted wire encapsulating device can improve workefficiency and greatly save manpower and material resources when used.