01Description of requirements
Routinely speaking. Once the fields in the ArcGIS attribute table are established, their order, field names, and field types cannot be changed.
When we drag the fields in the attribute table, we only change the temporary display order of the fields. Once the data is reloaded it will appear in its original order.
So what are the techniques to solve such problems, without using other software, we can use the merge tool
02 Specific operation instructions
1. Change the field order. If you want to change the order of the fields loaded by the merging tool, perform empty merging, then you can change the order by moving the arrows.
2. Rename the field. Select the corresponding field in the field mapping, right-click to select, and rename it.
3. Rename fields and change field types. In the field, right click and select Properties. Then it can be changed.
03 Video Teaching
Code words are quite strenuous, let's start video teaching!
ArcGIS changes field name, type, order
Reference study:
ArcGIS10.X Getting Started Practical Video Tutorial (GIS Thinking)
https://edu.csdn.net/course/detail/4046 
https://edu.csdn.net/course/detail/4046 ArcGIS full series of practical video tutorials (GIS thinking)
https://edu.csdn.net/combo/detail/2070https://edu.csdn.net/combo/detail/2070