A cup of red bean milk tea has about 300 calories. Red bean milk tea is a mixture of red bean paste and milk tea, both of which contain calories. The red beans in the red bean paste contain carbohydrates and proteins, and the milk and sugar in the milk tea also provide energy, and the red bean milk tea is high in calories. Excessive consumption of red bean milk tea on a regular basis will increase the calorie intake, leading to excess energy and affecting health and weight management.