Transformer bobbin, manufacturing method of transformer bobbin, transformer and winding method of transformer

The invention relates to a transformer bobbin, a manufacturing method of the transformer bobbin, a transformer and a winding method of the transformer. The transformer bobbin comprises an I-shaped bobbin body with slots; one horizontal-axis side of the I-shaped bobbin body is provided with pins used for fixing leads; the outer side of the horizontal-axis side, with the pins, of the I-shaped bobbin body is provided with positioning posts used for positioning the leads. According to the transformer bobbin, the manufacturing method of the transformer bobbin, the transformer and the winding method of the transformer, the leads are positioned via the positioning posts, lead hitching is facilitated for a machine during automatic winding, forming the transformer is facilitated for the machine by means of automatic winding, manufacturing efficiency of the transformer is improved, and labor cost is saved.