Bitcoin remains the world's most watched digital asset, and evaluating its market value continues to be a crucial focus for investors. This article explores three major Bitcoin valuation models—the Stock-to-Flow model, Metcalfe's Law, and the mining cost-based model—analyzing their core concepts, advantages, and limitations while offering multi-dimensional investment insights. The author also invites readers to reflect on Bitcoin's long-term value and its potential to become a widely accepted digital currency.