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In temperature control system of certain special vehicle, many temperature-humidity transducers of 4～20 mA are adopted and special measurement circuits are designed for those transducers to complete signal acquisition in central processing unit. It brings such problems as high cost, low universality, low expansibility, low maintenance and low independent intellectual property rights. It is adverse to technique development of weapon equipment and efficiency progressing of warfare. So a temperature-humid measuring network based on XC164CS and 1-wire bus technology is designed and multi-channel temperature-humidity signals are measured isochronously by single detecting circuit. Besides, the performance meets system requirement that temperature error is less than ±0.5 ℃ and humidity error is less than ±3.5% RH. The practice indicates that this scheme is more advantageous than the traditional in many aspects, such as cost, reliability, measurement precision, universality and expansibility. Also the overall framework is more simple and the design of temperature control system of certain special vehicle is designed easily greatly, so it has significant senses in application.