The invention provides an intelligent photovoltaic greenhouse monitoring system and a monitoring method thereof, wherein the intelligent photovoltaic greenhouse monitoring system effectively improves the energy utilization rate of a photovoltaic greenhouse. The intelligent photovoltaic greenhouse monitoring system comprises a greenhouse body, a distribution room, an environment detection system, a monitoring platform, photovoltaic modules, a ventilating skylight, a soil environment monitoring system, an air environment monitoring system, an intelligent controller connected with the monitoring platform, a light supplementing system, a fan, a temperature supplementing device, a pesticide killing device, a spray irrigation system and a carbon dioxide generator, wherein the distribution room, the environment detection system and the monitoring platform are located outside the greenhouse body; the photovoltaic modules and the ventilating skylight are located on the top of the greenhouse body; the soil environment monitoring system, the air environment monitoring system, the intelligent controller, the light supplementing system, the fan, the temperature supplementing device, the pesticide killing device, the spray irrigation system and the carbon dioxide generator are located in the greenhouse body; the light supplementing system, the fan, the temperature supplementing device, the pesticide killing device, the spray irrigation system and the carbon dioxide generator are connected with the intelligent controller. The environment detection system, the soil environment monitoring system and the air environment monitoring system are in wireless connection with the monitoring platform; the photovoltaic modules are arranged on the top of the greenhouse body at intervals; the distribution room comprises an inverter, a storage battery and the controller and is connected with a power grid; the intelligent controller is connected with the storage battery, the inverter and the power grid.