The invention relates to an intelligent energy-saving distribution capacity-increasing distribution transformer. The intelligent energy-saving distribution capacity-increasing distribution transformer adopts the structure that a high-voltage lead wire built-in voltage and current transformer is mounted on the high-voltage side of a distribution transformer body; a low-voltage lead wire built-in voltage and current transformer is mounted on the low-voltage side of the distribution transformer body; a sunshine recorder is mounted at the top of the housing of the distribution transformer body; a transformer oil level and oil temperature sensor is mounted on the inner side wall of a transformer oil tank at the top of the distribution transformer body; an intelligent monitoring terminal is mounted on the side wall of the housing of the distribution transformer body; the signal output terminals of the high-voltage lead wire built-in voltage and current transformer, the low-voltage lead wire built-in voltage and current transformer, the sunshine recorder, and the transformer oil level and oil temperature sensor are all connected with the intelligent monitoring terminal. The intelligent energy-saving distribution capacity-increasing distribution transformer has the advantages that real-time running state monitoring and environmental condition monitoring can be realized; the running state of the transformer can be judged.