Embodiments of the invention provide a process chamber and a semiconductor processing apparatus. According to at least one embodiment, the process chamber includes a reaction compartment, a gas introducing system and a wafer transfer device. The reaction compartment is provided in the process chamber and used for performing a process on a wafer, the gas introducing system is used for providing processing gas to the reaction compartment, and the wafer transfer device is used for transferring the wafer into the reaction compartment. A lining ring assembly is provided in the reaction compartment, and is configured such that a flow uniformizing cavity is formed between the lining ring assembly itself and an inner side wall of the reaction compartment, so as to uniformly transport the processing gas, from the gas introducing system, into the reaction compartment through the flow uniformizing cavity.