This is a prospective, open label, single arm study. A total of 300 patients with primary non-small cell lung cancer treated with PD-1/PD-L1 immune checkpoint inhibitors(ICIs) are expected to included . All patients will follow up for at least 1 year. Patients with cardiac adverse reactions after PD-1/PD-L1 immune checkpoint inhibitor treatment at admission or during the subsequently follow-up period will randomly assigned a random number to each patient by computer random sequence. Patients with odd random number will treat with RASI（renin-angiotensin system inhibitors）, and those with even random number will treat with ARNI（angiotensin-receptor-neprilysin inhibitor）.

Inclusion Criteria:

1. Be willing and able to provide written informed consent/assent for the trial;
2. Lung cancer patients whose pathological results confirmed is primary non-small cell lung cancer, stage III~IV;
3. Patients received with ICIs treatment, including anti-PD-1 or anti-PD-L1 for at least two courses;

Exclusion Criteria:

1. Patients who do not have pathological diagnosis;
2. Patients who can't finish the follow-up;
3. The anti-PD-1, anti-PD-L1 therapy was less than two courses;
4. Patients whose cancer diagnosed with small cell lung cancer.

A total of 300 patients with primary non-small cell lung cancer treated with PD-1/PD-L1 immune checkpoint inhibitors(ICIs) are expected to included. And then the basic information and the examination results will be collected.