A 55-year-old female patient with a history of hypertension presented in February 2016 due to headache, vertigo, and vomiting for one week. The diagnosis indicated stage ⅣB (cT2NxM1c) left lung adenocarcinoma with bilateral lung metastasis...We reported a 55-year-old female patient survived for more than 77 months. As we know, This case is the longest survival time reported patient with L858R and BMs so far. This case proved aumolertinib may be a good choice for T790M exon 21(L858R) NSCLC patients, especially with brain metastasis.