Hi there @miansohaib1159!
Don here from Shopify.
Thanks for reaching out here in the Shopify Community for info and I'd be only too happy to help you to bring your existing blog with you to your Shopify store.
The first thing you would need to do (if you haven't already) would be to set up a Shopify account which you can do from here on our pricing page.
Once you have set your store up, you could use an app like BlogFeeder to import your blog content from your existing site.
Have you been selling via your blog previously or are you just looking to get started with selling now?