Abstract: A practical computer acquisition and transmission system of drilling data is presented in this paper. A Chinese made miciocomputer is used to control acquisition and processiong of drilling data at the drilling site. An IBM PC/XT is used to collect and process drilling data at the drilling company. Data communication between drilling site and drilling company is realized through ultrashort wave radio channels. The primary instrument gives six or eight parameter measurement. A new UPS is used for the system. Reliable hardware and software design ensures stable operation. and the modular structure of the system makes user application, maintenance and expansion possible. Standard data chain and CRC-16 check mode are used in inquiry control by the central station at the drilling company. Different information media, such as display, curve drawing, tabulation, disk record and necessary data processing are provided with Chinese characters function.