Abstract: Method of and apparatus for a continuous monitoring and analysis of spinning units operation in multiple unit open-end spinning machine. The invention permits the obtaining of reliable data about the operation of open-end spinning units in the machine, and of immediately processing them in the form of an analysis of the total performance of one or a plurality of machines. The active or inactive state of operation of the individual spinning unit is detected by a continuous monitoring of the spinning units at predetermined intervals consisting in emitting checking signals by a timing pulse generator of the monitor to those units. The signals thus obtained are used for analyzing the active state of the spinning units, the inactive state of the spinning units, the analysis of the active or inactive state of spinning units on each side of the machine, and an analysis of the production rate of the machine.