Silica gel nanoparticles were synthesized by hydrolysis of tetraethyl orthosilicate to form gel particles. Tannic acid was added to optimize their morphology. A superhydrophobic spraying material with low sur-face energy was synthesized by using hexamethyldisilazane as surface modifier. It was dispersed in ethanol and sprayed on common surfaces such as paper, glass, aluminum foil, wood board, cotton textile and plastic foam, all of which formed super hydrophobic surfaces in a short time, and the water contact angles were above 150°. Subsequently, the self-repair properties of the prepared superhydrophobic coating after being destroyed by external force were investigated. The results show that the spray solution of 1 mg/mL only needs to be sprayed with three layers to construct the superhydrophobic surface, and it has good transparency. The sprayed glass were rubed with heavy on the sand paper for 1000 millimeter, the contact angle decreased from 153.5° to 105.5°, and then sprayed one layer back to 154°. And also, the su-perhydrophobic coating can be repaired by organic solvent quickly and easily after being damaged by ex-ternal force.