A hydraulic module and a hydraulic module control system for a floor heating multi-split air conditioner, the floor heating multi-split air conditioner comprising the hydraulic module and a plurality of floor heating modules connected with the hydraulic module, and the plurality of floor heating modules being correspondingly arranged in a plurality of rooms, wherein the hydraulic module control system comprises: a control module and a plurality of temperature controllers corresponding to the plurality of rooms, wherein the temperature controllers are in signal connection with the hydraulic module, and are configured to set a set temperature in each room and an operation mode of the hydraulic module; wherein the control module is in signal connection with the hydraulic module, and is configured to: set preset water outlet temperature values under the different operation modes of the hydraulic module; and control the hydraulic module to operate according to received operation modes set by the temperature controllers and preset water outlet temperature values corresponding to the set temperatures, and control the hydraulic module to operate in a cooling mode or a heating mode; wherein the hydraulic module comprises a water inlet pipe, a water outlet pipe, a master two-way valve, a master three-way valve and a water tank, an inlet end of each floor heating module communicates with the water outlet pipe, an outlet end of each floor heating module communicates with the water inlet pipe, each floor heating module is provided with a separate valve element, and the master three-way valve is connected with the water outlet pipe, the water tank and the inlet ends of the plurality of floor heating modules; the master two-way valve is connected with the outlet ends of the plurality of floor heating modules and the water inlet pipe; and wherein the hydraulic module further comprises a hydraulic heat exchanger, a built-in water pump, an electric heating unit and an external water pump, the hydraulic heat exchanger comprises a first joint connected with an outdoor unit high-pressure air pipe, a second joint connected with an outdoor unit liquid pipe, a third joint connected with the built-in water pump and a fourth joint connected with the electric heating unit, an inlet of the built-in water pump is connected with the water inlet pipe, an outlet of the electric heating unit is connected with the water outlet pipe, and the external water pump is arranged between the outlet end and the master two-way valve. wherein the temperature controllers are in signal connection with the hydraulic module, and are configured to set a set temperature in each room and an operation mode of the hydraulic module; wherein the control module is in signal connection with the hydraulic module, and is configured to: set preset water outlet temperature values under the different operation modes of the hydraulic module; and control the hydraulic module to operate according to received operation modes set by the temperature controllers and preset water outlet temperature values corresponding to the set temperatures, and control the hydraulic module to operate in a cooling mode or a heating mode; wherein the hydraulic module comprises a water inlet pipe, a water outlet pipe, a master two-way valve, a master three-way valve and a water tank, an inlet end of each floor heating module communicates with the water outlet pipe, an outlet end of each floor heating module communicates with the water inlet pipe, each floor heating module is provided with a separate valve element, and the master three-way valve is connected with the water outlet pipe, the water tank and the inlet ends of the plurality of floor heating modules; the master two-way valve is connected with the outlet ends of the plurality of floor heating modules and the water inlet pipe; and wherein the hydraulic module further comprises a hydraulic heat exchanger, a built-in water pump, an electric heating unit and an external water pump, the hydraulic heat exchanger comprises a first joint connected with an outdoor unit high-pressure air pipe, a second joint connected with an outdoor unit liquid pipe, a third joint connected with the built-in water pump and a fourth joint connected with the electric heating unit, an inlet of the built-in water pump is connected with the water inlet pipe, an outlet of the electric heating unit is connected with the water outlet pipe, and the external water pump is arranged between the outlet end and the master two-way valve.