Hi all,
I have some problem
My website have
Category 1
Item 1 (In Category 1)
Category 2
Item 2 (In Category 2)

When I using google master tool and I see google index

Category 1/item 2 --> It show page not correct . I dont want to show it. How to fix it .Plz help

You can use canonical tags to correct this issue.
You can either use a K2 plugin for this, or map your entire content (K2 categories in this case) in menu items.

Google somehow picked up this URL. Make sure you have not posted it in your site.

I tried some plugin canonical tag.Problem not resolve. Other plugin is commerical
You said "use a K2 plugin for this, or map your entire content (K2 categories in this case) in menu items."
how can I do that ? Can u explain more it ?

Thank for your help.

Create a menu item for all your K2 categories so that these categories have unique links.
You can also use K2 's advanced SEF.