It depends on what you want to do. Baking paper is used to bake cookies, puffs and the like, in the toaster, under the mat; Tin foil is mainly used for hot dishes and local baking to avoid coloring and wrapping.
Baked paper is high temperature resistant and oily. When baking, it can be used to pad under food, which is not sticky or rotten. Tin foil can also resist high temperature and has the characteristics of baking paper. But its cost is relatively high, and it is generally used to make western food. Compared with baking paper, it is water-resistant and can directly wrap food for heating. The average family bakes food in a microwave oven.