Textile slurry composition mixed with starches of different denaturation degrees and preparation thereof

The invention discloses a weaving sizing agent composition mixed by the starches with different modification degrees and preparation method thereof, which is characterized in: adding 2-8 parts of native starch or modified starch with viscosity of 13.1mPas-480mPas, 2-8 parts of modified starch with viscosity of 3mPas-11.4mPas into a mixing machine, mixing them physically in dry powder state; adding 0-0.5 part of sizing grease, 0-0.5 part of hygroscopic agent, 0-0.1 part of antistatic agent and 0-2 parts of other sizing agents into the mixing machine, mixing uniformly, and obtaining the weaving sizing agent composition. The two starch components in the composition have the teamwork effect for increasing and reducing viscosity, obviously reduces apparent viscosity of the sizing agent, increasing the agent film fracture intensity and fracture work, and reduces sizing agent cost.