Abstract: Objective In order to overcome the problems that the ordinary sounder's volume is bulky, has less function, is inconvenient to carry, its adaptation is weak, easy falling damage or occurrence of sharp instrument injury and other defects, the multifunctional portable universal safety type bone hole probe pen is developed. Methods This pen set detection, loading and unloading, twisting and winding, straight, guide and maintenance functions in one. Take reference to contrast with ordinary sounder after surgery, experiment and teaching application. Results This pen is a multipurpose, safe and universal, damage-resistant and portable, high cost-effective. Conclusions This pen is easy to carry and store, the apparatus preparation is simple and quick, it can free instrument box, prevent of sharp injuries, improve the operating efficiency. Its adaptation is high, it is suitable both in peacetime and in wartime.