An ultrasound transducer system includes an alignment-guidance transducer device and a control device. The alignment-guidance transducer device includes a transducer module for emitting ultrasound waves and receiving ultrasound signals reflected from a target hollow organ, and an indicator module for indicating a state of alignment between the alignment-guidance transducer device and the target hollow organ. The control device is in communication with the alignment-guidance transducer device for processing the ultrasound signals received from the transducer module and transmitting instructions to the indicator module according to the processed ultrasound signals, so as to guide a user to align the ultrasound transducer device to an extension direction of the target hollow organ. Processing of the ultrasound signals includes analyzing the ultrasound signals to obtain characteristics of the target hollow organ, and determining the levels of alignment of the transducer module to the hollow target organ according to the characteristics.
