This study aims to evaluate the effects of Omaha System framework interventions on quality of life, emotional well-being, and sleep quality in 507 mid to late-stage lung cancer patients. Retrospectively, we compared data of 294 patients receiving conventional care (conventional group) with 213 patients undergoing Omaha System interventions (intervention group) from January 2019 to January 2023. Key indicators included quality of life (FACT-L), anxiety (SAS), depression (SDS), sleep quality (PSQI), hope (HHS), and dignity (PDI). Post-intervention, the intervention group showed a significant increase in FACT-L scores (P<0.001), indicating enhanced quality of life. There was a notable reduction in PSQI scores (P<0.001), suggesting improved sleep quality. Additionally, their anxiety and depression levels significantly decreased, as evidenced by lower SAS (P<0.001) and SDS scores (P<0.001). Logistic regression revealed that care nursing intervention scheme (P=0.007), age (P=0.008), marital status (P=0.002), per capita monthly household income (P=0.004), SAS after intervention (P=0.002), and PSQI after intervention (P=0.002) had a positive influence on quality of life. In conclusion, the Omaha System interventions markedly improved the quality of life, emotional state, and sleep in lung cancer patients.