The guava is one of the most important evergreen fruit trees in Taiwan, which can blossom and produce fruit in four seasons. The management is extremely complicated during the growth period including branch pruning, fertilizing, irrigating, plant disease preventing and controlling fruit thinning etc. The weed control is the main issue of the vegetation culture in orchards. At present, there are lawn mowers, manure applicator, sprayer, trimmer and pulverizer for orchard residual branches and agricultural power carrier to use in the farm management. The other kind of labor-saving machines continue developing. If the terrain rugged, between the lines has the aqueducts, the plants were excessively dwarfed and close-planted; some machine will be unsuited to operate in orchard field. Therefore, suggested the guava field must to be properly arranged and increased the plant spacing for well-lighted and ventilating effect, and the labor-saving machines will be enhanced the best working efficiency.