(1) material selection: bananas used to make banana chips should be fully mature, free from pests and diseases, and not rot, washed, peeled and cut into 0.5 ~1cm slices. (2) Ingredients: banana 10, milk powder 1 0, and water 5. (3) Production: firstly, the milk powder is mixed with water, poured into banana slices, and fully stirred, so that all banana slices can be adhered with milk powder. Put the stirred banana slices into a dryer, heat them at 80 ~100℃ to dehydrate them, and take them out of the container when the water content of banana slices is16% ~18%. In order to take it out of the heated container, some vegetable oil can be coated on the bottom of the container before loading. (4) Deep-frying: the baked banana slices are put into130 ~150℃ vegetable oil and fried to brown color, and the crispy and fragrant finished product is obtained after taking out the pan.