The invention relates to a sunflower seed and a processing method thereof. The sunflower seed is prepared by taking a sunflower seed as a raw material, and anise, fennel, cassia, pericarpium citri reticulatae, clove, star anise, pepper, salt, saccharin sodium salt, sodium cyclamate, acesulfame-K and water as ingredients, and is prepared by the following steps of selecting, cooking, drying, frying, cooling and spraying fragrance. The sunflower seed is characterized by comprising the following components in parts by weight: 1-2 parts of anise, 1-2 parts of fennel, 0.5-1 part of cassia, 0.5-1 part of pericarpium citri reticulatae, 0.01-0.2 part of clove, 2-3 parts of star anise, 1-2 parts of pepper, 4-6 parts of salt, 0.05-0.1 part of saccharin sodium salt, 0.3-0.6 part of sodium cyclamate, 0.01-0.1 part of acesulfame-K and a proper amount of water. In the invention, as spices are adopted to cook and flavor the sunflower seeds, and a high-temperature frying technique is adopted to process the sunflower seeds, thus shortening the processing time of the sunflower seeds, maintaining the nutritive components and the healing effects of the sunflower seed, improving the uniform and thick burnt taste of the sunflower seed, and providing better mouth feel. The sunflower seed not only has reasonable and practical processing method, and practicality, but also has simple operation and good effect, and is beneficial for being popularized.