To provide a data collecting apparatus capable of displaying sampling integrated information of measurement data by the day, by the week, and by the month and making the sampling state of the measurement data and alarm information intuitively grasped.

In the data collecting apparatus, a calendar display part and a file integration display part are displayed on a display screen of a two-dimensional display. The calendar display part is provided with a cursor for specifying a verification period of measurement data, and a sampling period of measurement data is displayed in line segments on the calendar display part. File integration information of a verification period specified by the cursor is displayed on the file integration display part.