A fluid transmission device for delivering fluid is disclosed. The fluid transmission device comprises a valve base having an input passage and an output passage, a first fluid transmission module and a second fluid transmission module are both disposed on the valve base, and each fluid transmission module has an actuating module, a valve cover and a valve membrane disposed between the valve base and the valve cover, the actuating module is disposed on the valve cover and defined a first and a second pressure chambers, respectively, wherein the two actuating module bend in the same frequency and has a phase lag, which make the interior volume of the first and second pressure chambers changed, respectively, and the fluid is driven by the difference of pressures to flow from the input passage through the first transmission module, the valve base, and the second transmission module, and flow out form the output passage.一種流體輸送裝置,用以傳送流體,其中閥體承載部具有入口流道以及出口流道;第一流體輸送模組及第二流體輸送模組分別設於閥體承載部上,且各具有致動組件、閥體蓋體及閥體薄膜,閥體薄膜設置於閥體承載部及閥體蓋體之間,致動組件設置於閥體蓋體上,且與閥體蓋體之表面形成第一壓力腔室及第二壓力腔室;其中,該兩致動組件以相同振動頻率且具有相位差作動,使第一壓力腔室及第二壓力腔室體積改變,產生壓力差以推動流體由閥體承載部之入口流道流入,經第一流體輸送模組、閥體承載部及第二流體輸送模組,再由出口流道流出。2‧‧‧流體輸送裝置20‧‧‧閥體承載部200‧‧‧第一閥體座201‧‧‧第二閥體座202‧‧‧入口流道203‧‧‧出口流道21‧‧‧第一流體輸送模組22‧‧‧第二流體輸送模組
