1. Get up in the morning to prepare breakfast, and put a bunch of flowers or gifts at the bedside. You can consider cooking some delicious breakfast that your wife likes, such as fried eggs and steamed buns.

2. Arrange a day's activity plan. Consider taking your wife to visit her favorite places, such as parks, museums and shopping malls. You can also arrange some special activities, such as SPA and cinema.

3. Prepare a small party or party. Invite my wife's best friend to come home for her birthday and prepare cakes and gifts for her.

4. Make a DIY gift. Consider making a special gift by hand, such as weaving a scarf and drawing a picture by hand.

5. Arrange a romantic dinner. You can choose your wife's favorite restaurant or cook at home, light candles and spend an unforgettable night in a warm and romantic atmosphere.

In short, there are many ways to surprise your birthday. You can choose the one that suits you best according to your wife's preferences and personality. The most important thing is to prepare carefully and let her feel your love and concern for her.