The aim of the research is to study the effect of cryotherapy method on blood gases (PCO2,PO2,HCO3 and PH) and its influence on the recovery of athletes after running 10 Km. The researcher used the experimental method by using (pre-post- 60 mins post measurements) on an experimental group and a passive group because it suits the nature of the research . The sample was composed of 7 runners in each group with an average age of 20.5 chosen by the intentional method. Each group had to run 10 km. The experimental group had their bodies covered with ice packs for 20 minutes while the second group had a passive rest for 60 minutes. The athletes approved that blood samples would be withdrawn in all measurements of the research before, immediately after and after 60 minutes. The results showed there are statistical difference for the cryotherapy group in all measured parameters(PCO2,PO2,HCO3 and PH) in favor of the first post measurement. It was evident from the results that when cryotherpy was applied, the measured parameters returned to the pre-measured values. This highlights the positive effect of cryotherapy on the recovery process of athletes. The researcher recommends further studies to be done on the influence of cryotherapy on anaerobic exercises as well as changing the 60 mins post measurement to shorter timings