The invention provides a breeding method and an application method of a citrullus lanatus special pollinating variety. According to the breeding method, the female parent is obtained via hybridization of mini-watermelon variety (Chunfeng) with mini-fruit selfing line (DW-4); the male parent is obtained via multi-generation inbreeding of mini-fruit material (WH-3704); a hybridized combination is prepared so as to obtain the F1 generation which is the citrullus lanatus special pollinating variety. Reasonable plantation of the citrullus lanatus special pollinating variety with citrullus lanatus is carried out, growth of citrullus lanatus is not influenced, and sufficient pollen is provided for pollination, field natural pollination is realized, the shape of fruits obtained via pollination is regular, few malformed fruit is generated, production cost of citrullus lanatus is reduced, simplified production is realized, and requirements of citrullus lanatus simplified plantation are satisfied.