PURPOSE: To provide a neural network learning device which can improve the high speed characteristic of learning, convergence for an optimum solution and safety for system-down.

CONSTITUTION: A storage device 6 storing a learning pattern, storage devices 4 and 5 storing a load value, storage elements 2 and 3 inputting and storing more than one learning pattern and outputting the whole components of a vector in one learning pattern in parallel and a neural network device 1 altering a load value held in a self internal part in accordance with the inputted learning pattern are provided. The learning pattern is transferred from the storage device 6 to the storage elements 2 and 3, and the learning pattern which the storage elements 2 and 3 output is set to be the input of the neural network device 1. The initial value of the load value held in the neural network device 1 is set to be the load value transferred from the storage device 4 or 5, and the load value altered in the neural network device 1 is transferred to the storage device 5 so as to store it.