ALB and acute kidney injury: We found that Nomogram had good predictive efficacy for early assessment of all-cause mortality risk in hospitals in HF patients, with an AUC of 0.782 in the training cohort and 0.766 in the test cohort of the LR2 model; 3) We found that age, albumin, sodium, bicarbonate, lactate, magnesium, phosphate, platelets, AG, T-CO2, MCV, HR, PaO2, AP, BE, RBC, RR, TB, WBC, pH, AKI and VA are independent factors influencing in-hospital mortality in HF patients.