A fluid valve structure capable of outputting constant flow and constant pressure is provided. A control handle is adapted to control turning of a ball valve. The ball valve is formed with first, second and third openings. The openings are arranged at 90 degrees each other. The diameters of the first, second and third openings can be set according to the required flow and.. pressure. The fluid passes the first, second and third openings through an annular guide groove and guide holes of a water inflow connector, enabling the fluid gathered to the small diameter pipe portion to output constant flow - and constant pressure. The user can observe the state of the fluid through glass windows provided on the small diameter pipe portion. The control, handle controls the turning of the ball valve for the openings to be located in TEST, OFF,, and DRAIN state, respectively.
