Dacotinib efficacy is anti-tumor and works is indicated for the first-line treatment of patients with locally advanced or metastatic non-small cell lung cancer with epidermal growth factor receptor (EGFR) exon 19 deletion or exon 21 L858R substitution mutation. Dacotinib is a second-generation targeted drug for the treatment of lung cancer that inhibits mainstream EGFR mutant proteins. The most common side effects of taking dacotinib are diarrhea and rash, other side effects are nausea and vomiting, folliculitis, dry skin. Stomatitis, etc. Pregnant and lactating women should use the drug with caution and need to take it under the guidance of a doctor. Patients with the need for medication, need to be under the guidance of a doctor to use medication, medication during the treatment is recommended to adjust the diet, light, nutrition should pay attention to balanced, less spicy and stimulating food. Prohibit the consumption of alcohol at the same time prohibit the consumption of greasy food, more rest, more fresh vegetables and fruits.