A salivary stone on mouth floor was removed in a 10-year-old girl with cerebral palsy and epilepsy. If left untreated, sialolithiasis can lead to inflammation of whole salivary gland with severe pain and inflammation that spread to other side of salivary gland causing damaging of teeth, abscess, and nerve disorders. Special needs patients have difficulty to express their pain or discomfort. To overcome communication problem and offer appropriate treatment in proper time, a careful and comprehensive clinical examination including soft tissue and tooth should be prioritized in special needs patients visiting the dental clinic.