This study presents an automated high-throughput platform for genome editing, capable of editing thousands of samples within a week. The platform integrates gRNA design, plasmid construction, base editing in mammalian cells, and a machine learning model (CAELM) to predict cytosine base editor (CBE) performance. CAELM utilizes both chromatin accessibility and sequence context to accurately predict in situ base editing results. This platform significantly accelerates the development of BE-based genetic therapies.