Malnutrition of pregnant women needs to be supplemented with various nutrients, including protein, carbohydrate, fat, vitamins and minerals. The following are some common foods that can help pregnant women supplement these nutrients:

1. High protein food: chicken, fish, beef, tofu, eggs, etc.

2. Carbohydrates: rice, noodles, bread, potatoes, corn, etc.

3. Fat: olive oil, fish oil, nuts, avocados, etc.

4. Vitamins: fresh vegetables, fruits, whole wheat bread, milk, etc.

5. Minerals: kelp, seaweed, shrimp skin, beans, etc.

In addition, pregnant women should also pay attention to the balance and diversity of diet to avoid excessive dependence on certain foods or nutrients. If the pregnant woman is seriously malnourished, it is recommended to consult a professional doctor or dietitian and make a personalized diet plan.