Manual sampling auxiliary device

The utility model relates to the technical field of laboratory liquid sample measuring auxiliary instruments, in particular to a manual sample injection auxiliary device which comprises a sample injection pipe, a height fixing disc and a sample injection pipe clamping sleeve, the sample injection pipe clamping sleeve is a cylindrical cavity with an opening formed in the side face, the sample injection pipe is fixedly inserted into the sample injection pipe clamping sleeve, and the height fixing disc is arranged on the height fixing disc. The height fixing disc is provided with an insertion opening into which a sample injection pipe clamping sleeve is inserted, and a screwing assembly for clamping and fixing the sample injection pipe clamping sleeve is arranged on the height fixing disc located at the insertion opening; according to the utility model, the defect that a hose is not easy to suck samples is effectively overcome, any manual sample sucking depth can be adjusted, sample pollution caused by contact w