The invention relates to a wind power variable pitch control system and a wind power variable pitch system. The variable pitch system comprises three variable pitch motors and also comprises three variable pitch driving cabinets and three standby power supply cabinets corresponding to the three variable pitch driving cabinets; a variable pitch driving device of a corresponding blade is arranged in each variable pitch driving cabinet; the variable pitch driving devices are connected by communication lines, signal lines and power supply lines for adapting the communication lines, signal lines and power supply lines to a slide ring of a wind power unit main control system; each variable pitch driving device is in driving connection with the respective corresponding variable motor. The wind power variable pitch control system and the wind power variable pitch system have the beneficial effects that most functions of a center control cabinet of a traditional seven-cabinet variable pitch system is realized by the wind power unit main control system, so the space occupied by a center control cabinet is saved, the cost of the variable pitch system is reduced and the competitiveness of manufactures is improved.