The invention relates to an intelligent solar photovoltaic module circuit and a control / protection method thereof. The circuit comprises multiple groups of photovoltaic strings in series connection, wherein each photovoltaic string comprises an intelligent photovoltaic assembly unit, an MPPT (maximum power point tracking) function module, a switch tube, a CPU (central processing unit) internal storage module and a control module, wherein the switch tube enables the photovoltaic assembly unit to be short-circuited or enables the photovoltaic assembly string to be disconnected with other photovoltaic assembly stings, and the switch tube is controlled by the control module. The intelligent solar photovoltaic module circuit and the control / protection method thereof have the advantages as follows: 1, the MPPT structure can be simplified, electric and electronic elements are reduced, the efficiency is improved, and the cost is reduced; 2, even if a single solar photovoltaic assembly is disconnected as a result of a fault, the output of the whole string cannot be influenced, and the photoelectricity utilization rate is substantially improved.