Multipath buried pipeline natural gas leakage data acquisition device

The invention discloses a multipath buried pipeline natural gas leakage data acquisition device, which comprises a data processing terminal, a power supply, a data acquisition and processing unit andrelay processing units, wherein each relay processing unit is connected with a laser methane sensor; the laser methane sensor is fixed inside a protection shell; the top surface of the protection shell is provided with a round opening; the opening is connected with a ventilating duct; the end where the ventilating duct and the opening are connected is provided with a fixing frame; one side, closeto the protection shell, of the fixing frame is fixed with a fan; the fan is connected with the relay processing unit; and the relay processing unit is fixed inside a protection cabinet. The relay processing unit and the laser methane sensor are in a parallel connection state, data are collected independently, the data transmission stability and the reliability are ensured, the working environmentof the laser methane senso