目の中に入れても痛くない
Meanings
1
apple of one's eye; dote on someone
Idiomatic expression describing extreme fondness, often for a child or grandchild, implying that even putting them in one's eye wouldn't hurt. Used hyperbolically.
My first grandchild is so cute I could just eat them up.
She loves her pet cat so much that she thinks the sun shines out of its eyes.