How to fix the blurry object edge

See the image below. The edge of the cube looks pretty blurry. Is there any solution??
Pls help me to solve this!!!

@lucas1324
Blurry or jaggies? Maybe anti-alias fault? Maybe your screen resolution? If jaggies then maybe not “blurry” enough?

As @vertexx said above, it looks like a problem anti-aliasing could help with. Shaders generally can only tell on a per-pixel basis whether the object is there or not, so you get this staircase-looking effect when you look closely at the edges. There was a Manual page for AA here:

The way it is generally handled is by adding AA in Unity’s post-processing effect stack. Aliasing artifacts are annoying, but also bear in mind that these jagged edges are much less apparent in a textured and lit scene.