A smart wearable device and a health monitoring method. The smart wearable device includes: an image acquisition unit configured to acquire a first image of food before a wearer takes the food and a second image of the food after the wearer takes the food； a calories analyzing unit configured to analyze the first image and the second image of the food to determine types of the food and an intake amount, and to determine an amount of intake calories based on the types of the food and the intake amount； and a calculation unit configured to generate a target exercise amount based on the amount of intake calories.
