The real-time respondent speed and the reliability play a deciding role on the performance of the digital monitoring for mine hoist. Differs to the traditional monitoring for mine hoist , it is possible to improve the signal respondent speed during upgrading of mine hoist by two methods, one is to adopt the quick microprocessor and another is the embedded real-time multi-task operating system. The Advanced Reduced Instruction Set Computer Machines (ARM) is particularly suitable to work as the controller of the digital monitoring for mine hoist with its merits as high running speed and complete peripheral equipments. The micro C/OS-Ⅱcan both improve the respondent speed against various signals from mining enterprises fields and the reliability of the controlling software as an embedded real-time operating system.The principle of task allocation is an important one of the highest priority related to the stability of mine hoist and functional tasks. To avoid multiple tasks simultaneously access the same shared resources, two semaphores are introduced to determine the access mechanism of the shared resource. Application of real-time operating system is the future of digital development of mine hoist.