The utility model provides a falling-object preventing pressure transmission ball seat which comprises an outer pipe column and a one-way flow guide device. The external pipe column comprises an outer sleeve, a connecting ring body and a flow passage pipe. A screen pipe is arranged on the outer side of the flow passage pipe in a sleeving mode. A ring cavity is formed between the screen pipe and the flow passage pipe. The front end of the screen pipe is connected with the connecting ring body in a sealed mode, and the rear end of the screen pipe and the flow passage pipe are sealed. The one-way flow guide device is located in the outer pipe column. A pressure transmission channel is formed between the outer side face of the one-way flow guide device and the outer pipe column. An inner cavity of the one-way flow guide device is communicated with the ring cavity through a flow guide pipe. The flow guide pipe and the pressure transmission channel are not communicated. When liquid flows through the ring cavity and the flow guide pipe and enters the one-way flow guide device, the inner cavity of the one-way flow guide device can be in the communication state and correspondingly communicated with the pressure transmission channel. Impurities in the liquid can deposit to the down-hole, a pump in an oil well or a water nozzle of a water distributing device in a water injecting well can be prevented from being blocked, and normal oil extraction and backwashing operation are ensured.