An external fixation device for fractures of extremities, belonging to the field of medical equipment, the invention includes a reduction fixer, a bone needle, a telescopic rod, a bone needle fixation rod, a curved rod pillar and a top wire, and the bone spicule fixation rod is installed on the reduction fixer On the top, there is a fixing hole at both ends of the bone needle fixing rod. The fixing holes are used to place and fix the bone needle. A curved rod pillar is respectively installed on the left and right sides of the reset fixer, and the two telescopic rods are respectively connected to two adjacent reset fixing rods. The bent rod pillar on the device can adjust the relative position of two adjacent reset fixers by adjusting the telescopic rod. The present invention solves the problem of the limited function of the existing unilateral external fixator system in orthopedic surgery, and also solves the problems of single function, complex structure, high price and difficult nursing care of the annular external fixator system, and further provides a A functional, inexpensive, and easy-care orthopedic unilateral external fixation device.