The invention discloses persimmon powder and a production technique thereof. The technique comprises the following steps that: after extraction of juice from persimmon, the juice undergoes zymohydrolysis, filtration, enzyme killing and concentration; after vacuum freeze drying of a concentrated solution, powdery materials with a tannin weight content between 1 and 99 percent are prepared; and the dissolution rate of the powdery materials in water is more than or equal to 50 percent. Compared with the prior art, the technique applies the technologies of zymohydrolysis and vacuum freeze drying in processing and production of persimmons, and selects the superior zymohydrolysis technology to perform cellular level processing on the persimmons on the premise that the compositions of the persimmons are researched; auxiliary materials used by the processing are ecological and environment-friendly and has no chemical pollution, and finished products are superior natural nontoxic chemical raw materials; and the materials are dried by adoption of the vacuum freeze drying technology, thereby the biological active ingredients of the materials are reserved to the maximum degree and the materials are easier to dissolve in water, consequently the materials are convenient to perform various chemical reactions so as to be widely applied in the chemical production. Moreover, the technique greatly releases the pressure of farmers for selling fresh fruit, and raw materials can be purchased from the farmers during the fruit thinning period; and the products obtained can be used for manufacturing cosmetics, recovering heavy metals in sewage, preventing the materials from being corroded, etc, and have a wide market prospect.