Feed liquid observation structure

The utility model relates to the field of pipeline connection, and discloses a feed liquid observation structure which comprises a feed liquid observation pipe made of glass, a feed liquid conveying pipe made of polytetrafluoroethylene and a pipeline fixing mechanism arranged on the peripheral face of the joint of the feed liquid observation pipe and the feed liquid conveying pipe in a sleeving mode. The pipeline fixing mechanism comprises a first fixing block, a second fixing block and a pair of rubber sealing gaskets, the first fixing block and the second fixing block are oppositely arranged up and down, the first fixing block is fixedly connected with the second fixing block, and one side of each rubber sealing gasket abuts against the peripheral face of the feed liquid observation pipe and the peripheral face of the feed liquid conveying pipe. The other side of the rubber sealing gasket is connected with the wall faces, close to the feed liquid observation pipe, of the first fixing block and the second fi