Bell’s palsy is the most common cause of acute unilateral facial paralysis and significantly affects facial symmetry, emotional expression, communication, and quality of life. Although spontaneous recovery occurs in many patients, a substantial proportion experience incomplete restoration, muscle weakness, synkinesis, and psychosocial consequences. Contemporary rehabilitation strategies emphasize facial exercises, neuromuscular retraining, biofeedback, and physiotherapy interventions; however, limited attention has been given to the systematic application of eccentric muscle training principles within facial rehabilitation. Eccentric contractions have demonstrated superior neuromuscular activation, structural remodeling, and motor adaptation in multiple rehabilitation contexts. This research and review article develops an evidence-based eccentric exercise model specifically designed for Bell’s palsy rehabilitation across acute and post-recovery phases. A comprehensive synthesis of existing literature on facial rehabilitation, facial neuromuscular physiology, motor control, and eccentric training mechanisms was conducted using the provided references. The proposed model integrates phase-specific progression, neuromuscular control principles, functional retraining strategies, and monitoring frameworks. Findings suggest that controlled eccentric facial exercises may enhance motor relearning, improve symmetry, reduce maladaptive movement patterns, and facilitate functional restoration when appropriately implemented. The study contributes a structured rehabilitation framework that bridges general eccentric training theory and facial nerve rehabilitation practice while identifying future directions for clinical validation.