Do i need a new service drop line to change from 100 mp service to 200 amp service?

Yes, you will likely need a new service drop line to upgrade from 100 amp to 200 amp service. This is because a 200 amp service typically requires a larger gauge wire and potentially a different type of service drop to safely handle the increased load. It's best to consult with a licensed electrician to assess your specific situation and ensure compliance with local electrical codes.