The invention provides a golden camellia white tea and a preparation method thereof. The preparation method includes the steps that branches and leaves obtained after tea pruning are subjected to withering and twisting, and then added to an immobilized column for fermentation treatment; then, the immobilized column is inoculated with the eurotium cristatum for fungal fermentation, the immobilized column after fungal fermentation is subjected to elution and then centrifugal treatment, the precipitate after centrifugation is dried at low temperature, and golden camellia powder is obtained; finally, the finished white tea product and the golden camellia powder are prepared into small squares, and the golden camellia white tea is obtained. The golden camellia white tea has the advantages that the probiotic composition of eurotium cristatum and the pharmacological effect of white tea are combined, and meanwhile raw liquid for black tea beverage processing can be produced, therefore, the utilization ratio of leaves obtained after tea pruning is greatly increased, and waste materials are turned into wealth. More importantly, due to the technological innovation, the varieties of tea products are expanded, the technological content of products is increased, the health care function of the tea is improved, and meanwhile, the economic value of products is increased.