The invention discloses green and all-natural compound plant-type efficient fruit and vegetable washing salt which comprises the following ingredients: sodium chloride, a sponge gourd extract and an auxiliary material. Powdered fruit and vegetable washing salt is visually similar to edible salt and is easily eaten by mistake. In case of mistaken eating, a stain removal ingredient in the common washing salt can cause stomachache, vomiting and diarrhea symptoms, and results in harms to a human body. The washing salt adopts a pure biomaterial, namely the sponge gourd extract, as a main material for removing pesticide residue. Under a synergistic effect of deemulsification of the salt and an auxiliary material assistant, the sponge gourd extract exerts cleaning effects on dirt such as oil stains, fruit wax, the pesticide residue; deep cleaning of the surfaces of fruits and vegetables is achieved; potential safety hazards during eating of the fruits and the vegetables are solved; the fruit and vegetable washing salt is a green and natural plant type formula, is safe, nontoxic and harmless to the body after the mistaken eating; the ingredients are all natural and biodegradable; the water quality is not polluted; no secondary pollution is caused; a preparation technology is simple and practicable; and the fruit and vegetable washing salt is safe, and has no side effects and a better popularization value.