The invention belongs to the technical field of plant cultivation and propagation, and in particular relates to a teak seedling stage foliar fertilizer and an application method thereof. The teak seedling stage foliar fertilizer comprises the following components: a 200-300-fold diluted solution of Lvxing liquid fertilizer and a 200-300-fold diluted solution of fruit-beatifying dew in a volume ratio of 1:(2-3); and the teak seedling stage foliar fertilizer not only can be used in the teak rootless seedling stage to make up nutrients required by growth, but also can be used when seedlings have certain root systems even complete root systems so as to supply amino acid, macroelements, medium elements and microelements required by the growth of teaks and promote more exuberant rapid growth of teak seedlings. The application method of the teak seedling stage foliar fertilizer provided by the invention is convenient in application and easy to operate and popularize, and can quickly provide a large number of high-quality sound teak seedlings for the market.