Grease lubrication system and power equipment

The grease lubrication system comprises a grease tank and a pump body, a main piston is arranged in the grease tank, and an inner cavity of the grease tank is divided into a tank hydraulic cavity and a tank grease cavity; a hydraulic driving mechanism, a grease driving mechanism and an oil control mechanism are arranged in the pump body; the grease driving mechanism comprises a grease plunger, a first grease cavity and a second grease cavity, the first grease cavity is communicated with the tank grease cavity, and the second grease cavity is communicated with the system output end; the oil control mechanism is used for controlling communication of the two grease cavities; the main piston is used for supplementing oil into the first oil cavity from the driven compression tank oil cavity; the hydraulic driving mechanism is used for being driven by external hydraulic oil and transmitting the hydraulic oil to the oil control mechanism, oil is supplemented to the first grease cavity and synchronously supplemented