In recent years, the area planted to guava trees has increased considerably in the Mekong River Delta. Guava is a easily-grown fruit tree, quick bearingfruit, often chosen to be intercropped with other plants in the garden or grown in a specialized form. Many delicious varieties of guava such as Queen guava, purple guava, seedless guava, Taiwanese guava, etc. Due to high economic efficiency, the guava growing area is increasingly expanding.Guava trees are often attacked by many pests, in which whitefly is a fairly common pest in the Mekong River Delta region, causing quite heavy damage on guava trees, significantly affecting yield and quality. ty of fruit, reducing costs, and reducing farmers income.