To study the efficacy of magnesium sulphate as adjuvant to levobupivacaine in transversus abdominis plane (TAP) block in patient undergoing abdominal cancer surgery.

In this randomized study, patients with (ASA) Ӏ and ӀӀ, aged from 1 to 7 years old and their weight less than 30 Kg of both sex will undergo surgery will be enrolled.

A written informed consent from all parents are obtained

Inclusion Criteria:

• patients with (ASA) Ӏ and ӀӀ physical status, aged from 1 to 7 years old and their weight less than 30 Kg of both sex will undergo surgery will be enrolled.

Exclusion Criteria:

• Children with infection, hemorrhagic disorders, hypersensitivity to the studied drugs, muscular disorders, central and peripheral neuropathy, organ dysfunction, cardiac problems and unconscious or mentally retarded patients will be excluded

all participant will be blinded to the study drugs.