CDC-C formation tester consists of several modules, the tool combination can be flexible due to client's requirement. This system can accomplish strain gauge, quartz crystal gauge , fluid temperature measurement, it can apply real-time downhole fluid analysis by performance of pump-out module and fluid analysis module through measurement of resistivity, water holdup and fluid density, and by this mean to achieve the goal of real formation fluid collection. We can apply air cushion for conventional sampling, or use pump-out module combined with water cushion for PVT high pressure sampling. CDC-C Modular Formation Dynamic Tester Tool is composed of HH2530/2580 surface acquisition system, CDX-C electronic unit section, CDM single probe unit, EPM power supply sub(power supplier to modules below CDM) , FAM fluid analyzing module, POM pump out module, and SAM Sampling module. SAM sampling module is divided into two sampling modes: air cushion and water pump out. All flowlines and sampling chambers are made by anti- H2S material.