A semiconductor memory device includes: a memory cell array including memory strings, one of the memory strings including memory cells; word lines commonly connected to the memory strings; and a controller configured to execute a write operation and a read operation on a page, the page being stored in memory cells connected to one of the word lines. The controller is configured to measure a cell current flowing in the memory string, and adjust a write voltage applied to a word line, based on a result of the cell current.