blur effect....

If I want to do blur effect,I might have to import “image effect package” in Unity pro.
Then what should I do? Drag that blur effect asset to the game object,in which a camera exists?
Then,do I get a script that’s related to the blur effect,so control the attributes of it,is the way to
control the blur effect?Am I right?If I am not right,plz,tell me how to do it?

Drag it on the camera. But what kind of effect do you want to achieve?

Assuming you have Unity Pro, import the image effects package into your project.

Select your camera and in the main menu bar choose Component>Image Effects>Blur

I imagine you are trying to do an effect where when player gets hurt, the camera view becomes blurry for a limited time?

If this is the case you will have to control a script. I did something like this not too long ago, it’s quite easy to do. Just create a new script, attach it to the camera (same one that has the blur image effect component) and program the script to control the amount of blur when the player gets hit or whatever. Very easy. Combine this technique with some more image effects and you can do some cool stuff seen in cool games, like Gears of War, CoD, etc.