#Is it mean that change frequency on daily base will increase spider bot visit? #And why we need to set priority option, Do i need to select 0.5 or 0.1 priority?
No, setting frequency to daily does not mean that spider bot will visit daily. It is just a means of telling the bot that this page is being updated daily. Priority option tells the bot which pages in your view are more important than other pages. It aslo does not mean that spider will visit these pages only. I would go for 0.5
You may want to check this article about xml sitemaps priority . Generally speaking, important pages should have higher priority.