A systematic analysis of the data on 14.5A GeV/c 28 Si-nucleus collisions is carried out to investigate the behaviours of Renyi dimensions, q D and Multifractal Spectral Function, () q f α. The Renyi dimensions, q D are observed to decrease with increasing order of the moments, q. However, the Multifractal Spectra are concave downwards with their maxima occurring around 1.21 0.01 q α = ±. A continuous curve representing Multifractal Spectral Function, () q f α , characterizes manifestation of fluctuations in the rapidity space.