The invention relates to an individual fan variable-pitch control system based on a pressure transmitter. The individual fan variable-pitch control system comprises the pressure transmitter, a position sensor, a variable-pitch controller, a variable-pitch driving module and a servo motor, the pressure transmitter measures wind acting force applied to wind turbine blades and outputs wind power data, the position sensor measures pitch angles of the wind turbine blades and outputs pitch angle data, the variable-pitch controller receives the wind power data and the pitch angle data, calculates variable-pitch angles according to the wind power data and the pitch angle data and sets variable-pitch control signals according to the variable-pitch angles, the variable-pitch driving module drives the servo motor according to the variable-pitch control signals, and the servo motor drives the blades to finish variable-pitch actions. The individual fan variable-pitch control system has the advantages that individual variable-pitch control of each blade is achieved, unbalanced aerodynamic loads applied to a fan are effectively relieved, operating stability of a wind driven generator is improved, pressure applied to the wind turbine blades is directly measured by the pressure transmitter, interference caused by wind speed measurement in fan operation is prevented, and measurement accuracy is effectively improved.