The invention relates to a production method for Tieguanyin with a unique mellow taste. The production method comprises the following steps: taking fresh leaves with three leaves and one core, which are picked from red-core Tieguanyin tea trees, as raw materials; sunning by using natural light and carrying out indoor temperature controlling, humidity controlling and cooling of green leaves; meanwhile, alternatively carrying out three times of rocking of the green leaves with different degrees to keep water and keep aroma; rapidly carrying out fixation; wrapping and rolling the tea leaves subjected to the fixation by a hot rolling method; putting the wrapped and rolled tea leaves into a drying oven to be dried; and placing the dried tea leaves on a carbon furnace and adjusting the temperature to carry out nine times of roasting to obtain the Tieguanyin with the unique mellow taste. According to the production method for the Tieguanyin with the unique mellow taste, the improvement is carried out on the basis of a traditional Tieguanyin production process and the prepared tea leaves have a rich compounded aroma, and also have a smooth mouth feel and have an obvious sweet aftertaste; the quality of the tea leaves is improved effectively and the economic benefits of the tea leaves are improved.