The invention discloses a cloud teaching system for multitask mixed-type precision teaching. A cloud server stores various types of teaching resources. A teacher terminal extracts the teaching resources in the cloud server, carries out the editing and integration to form a teaching plan or exercises, and transmitting the teaching plan or the exercises to the cloud server. Meanwhile, the teaching terminal can set a corresponding access authority. A student terminal visits the cloud server through a personal authority, downloads, looks up or edits the exercises and feeds back data to the cloud server. The teacher terminal carries out the consulting, corrects subjective items and looks up the feedback data in real time. Based on a cloud platform, the system optimizes the lesson preparation in a mode of multi-template import according to a task-driven teaching idea, enables the electronic terminal teaching and the conventional classroom teaching to be organically integrated through combining the preview, classroom teaching, post-class review, assignment accomplishing, and assignment setting and correcting, forms a mixed teaching mode, is used for multistage teaching organizations: students, groups and classes, and achieves the leveled precision teaching structure.