Abstract: Objective To explore the effect of bone marrow cavity puncture technique on the success rate of rescue in establishing infusion pathways for patients with traumatic hemorrhagic shock (THS). 
Methods A total of 40 patients with THS were selected from January 2021 to January 2022, all of whom underwent bone marrow cavity puncture to establish vascular access, and 40 patients with THS were selected before the development of bone marrow cavity puncture technology (January 2020 to December 2020), all of whom underwent central vein puncture to establish infusion access. The therapeutic effect within 4 h, success rate of one-time puncture, time to establish infusion pathway, time of blood pressure rising and survival rate of treatment were observed in two groups. The coagulation indexes ［prothrombin time (PT), activated partial enzyme thrombin time (APTT), thrombin time (TT)］ and blood gas indicators ［arterial partial pressure of oxygen (PaO2), arterial partial pressure of carbon dioxide (PaCO2), lactic acid］, and the incidence of adverse reactions between two groups were observed and compared. 
Results There was no significant difference in sex, age and cause of trauma between the two groups (P＞0.05). The effective rate of the observation group was significantly higher than that of the control group (P＜0.05). The success rate of one-time puncture and the survival rate of treatment in the observation group were significantly higher than those in the control group, while the time to establish infusion pathway and blood pressure rising were significantly lower than those in the control group (P＜0.05). After treatment, the time of APTT, PT and TT in the observation group was significantly shorter than that before treatment, which were sohorter than that after treatment in the control group (P＜0.05). After treatment, the levels of lactic acid and PaCO2 in the observation group were lower than those before treatment, which were lower than those in the control group, while PaO2 was higher than that before treatment and higher than that in the control group (P＜0.05). The incidence of adverse reactions in the observation group was significantly lower than that in the control group (P＜0.05). 
Conclusion Using bone marrow cavity puncture technique to establish vascular pathway for patients with THS can improve the success rate of rescue, which is rapid and effective. 

Key words: shock, hemorrhagic, bone marrow, punctures