Disclosed is a lead core rubber shock-insulation support, comprising a top support plate (11), a bottom support plate (12), a lead core rubber support body (13) and a backing plate (15), a pressure sensing unit (14) being provided between the top support plate (11) and the backing plate (15) or between the bottom support plate (12) and the backing plate (15). Disclosed is an intelligent support, comprising a data collection unit, a data output unit and the lead core rubber shock-insulation support, the data collection unit transmitting a support pressure measured by the pressure sensing unit (14) to the data output unit. Disclosed is a support monitoring system, comprising the data collection unit, the data output unit, a monitoring centre and the lead core rubber shock-insulation support. The lead core rubber shock-insulation support can monitor stress conditions of the support in real time, facilitating the replacement of the pressure sensing unit (14) without affecting the overall mechanical performance of the support. The support monitoring system can monitor and reflect the state of health of the support in real time.