This research takes you into the world of the left hand cello technique during late eighteenth and early nineteenth centuries. We will look back into the different existing fingerings: left hand position, extensions, shifts, fourth finger and the use of the thumb with the possible explanations. Furthermore, we will understand the background for the cello to emerge as a solo instrument and the consequent evolution of cello technique and as well as the emergence of treatises. We will have to look at the influence of French and German cellists and conservatories in order to understand the spreading of cello technique to professional musicians and evaluate the treatises of the two great cellists close to Beethoven, Jean Louis Duport (1749-1819) and Bernhard Romberg (1767-1841). Moreover, important information about left hand position and fingering is found in printed scores for cello with original fingerings and in contemporary iconography. Beethoven´s cello sonatas will be used as a reference to show different historical fingerings, for instance from passages of the cello sonata op. 69. The influence of the fingering choices on the music result will close off the research.