The invention discloses a beancurd jelly solidifying material comprising a mixture of a beancurd solidification agent and edible gel, wherein the weight ratio of the beancurd solidification agent to the edible gel is (100-300):(5-10), and the beancurd jelly solidifying material is obtained by heating the mixture in water, cooling and solidifying. A preparation method of the beancurd jelly solidifying material comprises the following steps of mixing 100-300 parts of the beancurd solidification agent and 3-10 parts of edible gel in parts by weight with water, uniformly mixing, heating, cooling and solidifying to obtain the beancurd jelly solidifying material. A beancurd jelly preparation method comprises the following steps of pouring hot soybean milk into a container, uniformly mixing the beancurd jelly solidifying material in the container with the hot soybean milk, dissolving the beancurd jelly solidifying material and reacting with the hot soybean milk to form beancurd jelly. When being used for preparing the beancurd jelly, the beancurd jelly solidifying material is good in reaction speed controllability, large in jelly forming amount and good in jelly quality.
