The multiplicity and pseudorapidity distributions of shower particles produced in interactions of the 24Mg at 4.5A GeV/c was studied in nuclear emulsion. The results indicated that the multiplicity distributions of shower particles produced in the collisions depend on the projectile mass. The pseudorapidity distributions are approximately Gaussian in shape. Also, the peaks of the pseudorapidity distributions of shower particles tend to shift towards the lower values of the pseudorapidity with increasing number of the shower particles. PACS Nos.: 25.75.-q, 29.40.Rg