The invention provides a processing method for relieving fruit-vegetable mashing browning. The processing method comprises the steps: S1, determining an interface position where moving materials in a masher touch with air when fruits and vegetables are mashed; S2, arranging a steam injection tube above the interface position in the masher to inject or fill steam so that the air at the interface position is removed; step S3, continuing to carry out steam injection or keep the steam filling state until the mashing is finished. According to the processing method, as the steam injection is conducted in the gas-phase space at the touching surface of the materials and the air to expel the air, the problem that the air is brought in the materials in the process of mashing the fruits and the vegetables so that the materials are inflated and brown is avoided, and meanwhile the processing method can further prevent browning through using the steam to warm inactivated enzymes.