The invention discloses a portable wireless electrocardiogram heart sound and breath sound signal display and storage device which comprises a power management module, a touch screen, a CPU processor, a keyboard, a wireless receiving and transmitting module, an LED display, an audio power amplifier, a loudspeaker, an earphone output interface and a special receiving slot for a wireless collection terminal, wherein the CPU processor is wirelessly connected with a wireless electrocardiogram, heart sound and breath sound collection terminal through the wireless receiving and transmitting module and receives electrocardiogram, heart sound and breath sound signals, the CPU processor is internally provided with analysis software, is connected with the LED display which can displays in real time, and is also connected with the audio power amplifier, the loudspeaker and the earphone output interface. The portable wireless electrocardiogram heart sound and breath sound signal display and storage device can receive electrocardiogram, heart sound and breath sound signal data transferred by the wireless electrocardiogram, heart sound and breath sound collection terminal in real time, display, store or playback a cardiogram and a heart sound and breath sound audio spectrogram in real time, play heart sounds and breath sounds, fulfill the function of volume regulation, and supply more intuitive and accurate diagnosis data to a doctor.