The invention provides an in-situ dynamic monitoring system for internal microenvironment parameters of concrete. The system comprises a temperature sensor, a humidity sensor, an all-solid-state chloride ion sensor, an all-solid-state pH sensor, a macro battery pack sensor and a square frame, wherein the temperature sensor is used for measuring internal temperature of the concrete; the humidity sensor is used for measuring internal humidity of the concrete; the all-solid-state chloride ion sensor is used for measuring the content of chloride ions in the concrete; the all-solid-state pH sensor is used for measuring internal pH value of the concrete; the macro battery pack sensor is used for measuring the corrosion condition of reinforcing steel bars in the concrete; the square frame is used for connecting the sensors into a whole, has a fixing function and prevents sensor locations from being changed in a mounting process or a concentrate pouring process. The monitoring system is accurate in positioning, comprehensive in testing and easy to mount, further, the system is provided with a self-powered system and adopts solar power supply, batteries are not required to be changed regularly, and the system is convenient and efficient accordingly.