A two-phase liquid cooling system for cooling electronic devices includes a housing configured for accommodating the electronic devices, a cooling loop connected to the housing, and an impedance device connected to the cooling loop. The cooling loop includes a supply manifold, a return manifold, and multiple cooling branches connected in parallel between the supply manifold and the return manifold, each cooling branch is configured for transferring cooling liquid to cool one electronic device. The impedance device increases impedance in each of the multiple cooling branches to reduce difference in impedance between each cooling branch and balances the pressure drop in each cooling branch, and thus balancing the cooling liquid flow rate in each cooling branch. A two-phase liquid cooling cabinet and method for liquid cooling of multiple electronic devices with different thermal loads are also disclosed.