Rational enzyme design remains a significant challenge in biochemistry, with current approaches relying primarily on computational prediction and directed evolution. We propose a complementary framework based on electromagnetic (EM) field-guided protein folding that may enable more precise control over catalytic site geometry. This approach leverages the principle that protein folding is fundamentally influenced by electromagnetic field dynamics, suggesting that external field application during folding could direct formation of desired active site configurations. While substantial experimental validation is required, preliminary theoretical analysis suggests this methodology could address current limitations in de novo enzyme design, particularly for reactions requiring precise geometric constraints. This paper presents the theoretical foundation, discusses potential applications, and identifies critical experiments needed to evaluate the approach's viability.