Objective To explore the effect of nursing intervention based on "Internet+" model in patients with esophageal cancer undergoing chemotherapy. Methods A retrospective analysis was conducted. A total of 86 patients with esophageal cancer admitted to Nanyang Central Hospital from June 2022 to June 2024 were selected, and divided into a control group and an observation group according to different nursing methods. The control group received routine nursing, while the observation group received nursing intervention based on the "Internet +" model. The control group included 43 patients, with 23 males and 20 females, aged 42-76 (59.98 ± 3.27) years. The observation group also included 43 patients, with 23 males and 20 females, aged 42-76 (59.98 ± 3.27) years. The two groups were continuously observed for 3 months. The nutritional status, psychological state, psychological resilience, quality of life, and patient satisfaction with nursing services were compared between the two groups. Statistical analysis was performed using t tests and χ² tests. Results The levels of hemoglobin (Hb), albumin (ALB), and prealbumin (PA) in the observation group were higher than those in the control group [(135.87 ± 16.01) g/L vs. (111.47 ± 15.65) g/L, (43.76 ± 4.41) g/L vs. (32.78 ± 4.35) g/L, and (253.77 ± 22.75) mg/L vs. (210.15 ± 22.60) mg/L] (t = 7.147, 11.624 and 8.920, all P < 0.05). The stress, depression and anxiety scores of the post-nursing Depression-Anxiety-Stress Scale (DASS) in the observation group were lower than those in the control group [(8.18 ± 1.00) points vs. (12.23 ± 1.01) points, (8.34 ± 1.07) points vs. (12.19 ± 1.13) points, and (8.38 ± 1.03) points vs. (11.89 ± 1.06) points], with statistically significant differences (t = 18.685, 16.223, 15.573, all P < 0.05). The scores of strength, optimism, and fortitude of the post-nursing mental resilience scale (CD-RISC) in the observation group were higher than those in the control group [(25.52 ± 2.10) points vs. (19.49 ± 1.84) points, (12.31 ± 1.13) points vs. (9.62 ± 1.12) points, and (40.53 ± 4.22) points vs. (32.75 ± 4.12) points], with statistically significant differences (t = 14.162, 11.087 and 8.650, all P < 0.05). The scores of physical function, role function, cognitive function, emotional function, and social function in the post-nursing quality of life (QLQ-C30) of the observation group were higher than those of control group [(81.18 ± 4.36) points vs. (75.57 ± 4.27) points, (83.37 ± 4.35) points vs. (76.86 ± 4.21) points, (86.63 ± 4.38) points vs. (79.92 ± 4.14) points, (85.51 ± 4.29) points vs. (77.84 ± 3.92) points, and (86.67 ± 4.77) points vs. (79.29 ± 4.65) points], with statistically significant differences (t = 6.028, 7.052, 7.301, 8.655, and 7.265, all P< 0.05). The scores of demand satisfaction, service attitude, psychological counseling, nursing timeliness, and nursing skills in the nursing satisfaction in the observation group were higher than those in the control group [(85.71 ± 3.94) points vs. (80.53 ± 3.24) points, (86.16 ± 3.62) points vs. (82.28 ± 3.53) points, (85.54 ± 3.91) points vs. (81.97 ± 3.78) points, (86.67 ± 3.61) points vs. (80.49 ± 3.55) points, and (86.86 ± 3.70) points vs. (82.28 ± 3.64) points], with statistically significant differences (t = 6.659, 5.032, 4.305, 8.004, and 5.786, all P < 0.05). Conclusion Nursing interventions based on the 'Internet +' model can enhance the nutritional status of esophageal cancer patients undergoing chemotherapy, effectively alleviate their negative emotions, strengthen their psychological resilience, improve their overall quality of life, and increase patient satisfaction with nursing care services.