Hospitalisation to any child is a very unpleasant and traumatic experience. Hospitalised children require more recreational play because, illness and hospitalisation constitute crisis in child’s life and since these situations are fraught with overwhelming stresses, children need to play out their fears and anxieties as a means of coping with these stresses. Hence in this study the investigator has tried to determine the effectiveness of play therapy upon anxiety among hospitalised children. Methods A true experimental pretest post test research design was used. The samples for the study were chosen by purposive sampling and the sample size was 30 in experimental group and 30 in control group. Tools such as Demographic variable proforma, Clinical variable proforma and State anxiety inventory scale were used to assess the anxiety of hospitalized children. Results The findings of the study revealed that in control group there was no significant difference in the mean and standard deviation of the anxiety levels (M =49.5, 48.4 & SD =8.30, 8.36) before and after play therapy. Whereas in experimental group significant difference in the mean and standard deviation of anxiety level (M=49, 42.76 & SD = 8.40, 8.29) was noted before and after play therapy at p<0.01.Overall study findings has identified the play therapy is effective in reducing the anxiety among hospitalized children.