The main differences between a food dehydrator and an oven lie in their functions, applicable scenarios, and operation methods.Here are their specific differences:

Function: A food dehydrator is mainly used for dehydrating food, such as fruit leather, vegetable chips, and jerky, while an oven is used for baking and roasting food, such as cakes, egg tarts, and chicken wings.

Applicable Scenarios: A food dehydrator is suitable for making healthy snacks, such as oil-free, sugar-free, and additive-free fruit leather and vegetable chips, while an oven is suitable for making baked goods, such as cakes and egg tarts.

Operation Method: A food dehydrator is easy to operate, allowing for low-temperature air-drying with even heating, no need for supervision, and automatic cooling, whereas an oven requires setting temperatures and times, and is prone to overcooking, necessitating supervision.

Choosing between a food dehydrator or an oven can be decided based on your own needs and preferences.