Enter the raster after the function box pops up, and pay attention to adding a suffix directly after the element. There are many ways to get points on the right side of the dialog box. See which one is suitable.

Elevation values need point attributes, so pay attention to the transformation. Convert multipoint attribute to point attribute (because point attribute is needed to add elevation value to point data later, not multipoint attribute), and find ArcToolbox->; Data management tools->; Element-> Feature-to-point function, note that it is a feature, not a feature class.

In the operation dialog box, select the point data with multipoint attribute, and select the output path, file name and file name with format suffix, such as DEMPoint.shp

Start processing after confirmation, and it will be finished soon. Looking at its attribute table, we can find that the attribute has become a point attribute.

Finally, the elevation value is added to the point data.

Look for arctoolbox-> Spatial analysis->; Extraction analysis->; The value of point function. The following figure

Enter point data DEMPoint.shp, raster DEM.tif and output point data Elevation.shp in the pop-up operation dialog box. Let's move.

After the operation is completed, it will be automatically loaded into arcgis. You can open the attribute table of Elevation.shp and find that the last column is the elevation value of the corresponding point extracted from DEM data. It's over. That's it.