Objective To study the effect of a new type of anti-injury thoracic puncture and catheterization equipment in the treatment of closure hemopneumothorax. Methods Four healthy adult beagles were randomly divided into 2 groups: group 1 and group 2, with 2 beagles in each group, and the cross-control method was used to conduct the experiment. Two groups of beagles were used to establish hemopneumothorax models. In the group 1, the left thoracic cavities of beagles were treated with traditional closed thoracic drainage surgery, while the right thoracic cavities were treated with a new type of anti-injury thoracic puncture and catheterization equipment. In the group 2, the left thoracic cavities of beagles were treated with a new type of anti-injury thoracic puncture and catheterization equipment, while the right thoracic cavities were treated with traditional closed thoracic drainage surgery. After 1 month of treatment, the experimental methods of the 2 groups were exchanged. The intraoperative puncture and catheterization time, maximum angle of thoracic catheterization, postoperative incision inflammation stimulation, postoperative extubation time, and postoperative complications of the 2 methods were compared. Results Compared with the traditional closed thoracic drainage surgery, the new type of anti-injury thoracic puncture and catheterization equipment had obvious advantages in reducing the time of puncture and catheterization (［47.13±11.56］ s vs ［88.13±16.84］ s, P＝0.002), adjusting the maximum angle of thoracic catheterization (［118.38±11.07］° vs ［102.25±9.92］°, P＝0.015), reducing the inflammatory stimulation of incision, and shortening the postoperative extubation time (［47.00±2.70］ h vs ［51.62±3.52］h, P＝0.019). Conclusion The new type of anti-injury thoracic puncture and catheterization equipment has certain advantages in the treatment of closure hemopneumothorax, and is suitable for the evacuation and first aid of a large number of wounded or battlefield patients.