Background: Pneumonia is the leading infectious cause of mortality worldwide and one of the most common lower respiratory tract infections that is contributing significantly to the burden of antibiotic consumption. The objective of this study was to identify the determinants of the progress of pulse rate, body temperature and time to recovery of pneumonia patients at Felege Hiwot referral hospital, Bahir Dar, Ethiopia. Method: A prospective cohort study design was used from Felege Hiwot referral hospital on 214 sampled pneumonia patients from March 01, 2022 up to May 31, 2022. The Kaplan Meier survival estimate and Log-Rank test was used to compare the survival time. Joint model of bivariate longitudinal and time to event model was used to identify factors of longitudinal change of pulse rate and body temperature with time to recovery jointly. For the longitudinal part linear mixed effect model and for the survival part Cox Proportional Hazard model were used. Result: As the follow up time of pneumonia patient’s increase by one hour the average longitudinal change of pulse rate and body temperature were decreased by 0.4236 bpm and 0.0119 . Rural residence of pneumonia patients are significantly decreased the average longitudinal change of pulse rate and body temperature by 1.4602 bpm and 0.1550 as compared to urban residence. Patients who had dangerous signs are significantly increased the average longitudinal change of pulse rate and body temperature by 2.042 bpm and 0.6031 as compared to had not dangerous signs. Patients from rural residence were 1.1336 times more likely to experience the event of recovery as compared to urban residence. The estimated values of the association parameters for and were - 0.4236 bpm and -0.0119 respectively and indicates that; pulse rate and body temperature were negatively related with recovery time. Conclusion: In this study Age, residence, danger sign, comorbidity, baseline symptom and visiting time were found as determinants of the longitudinal measures and time to recovery of pneumonia patients jointly. Hence, the government and other concerned stakeholders should give due emphasis to tackle on the identified causes of delay in seeking health care for the people with pneumonia. Health professionals are recommended to provide more attention for pneumonia patients whose pulse rate and body temperature were high. Keywords: Pneumonia, Joint Model, Pulse Rate, Body temperature