The invention discloses a power transmission and transformation equipment quantization evaluation method based on a statistical tool. The method comprises the following steps of establishing a quantization index system of power transmission and transformation equipment, wherein a power transmission and transformation equipment health state evaluation factor includes an evaluation factor of Oil-immersed power transmission and transformation equipment and evaluation factors of other power transmission and transformation equipment; collecting historical state data and current state data of the power transmission and transformation equipment; using a statistical tool SPSS to carry out test data normal processing on the collected data, carrying out preprocessing on an abnormal value and reserving an overtop abnormal value which exceeds a range and is generated because of a power transmission and transformation equipment fault reason; through a public coefficient analysis method, determining relevance of each variable in the collected data; through a public factor correlation analysis method, acquiring a contribution value of each evaluation index during total health condition evaluation of the power transmission and transformation equipment; establishing a power transmission and transformation equipment health index evaluation model, calculating a power transmission and transformation equipment health index, and according to the health index, evaluating the total health condition of the power transmission and transformation equipment. In the invention, a total health state of a transformer can be comprehensively evaluated.