Ministry undersecretary Hasen Khalef said eye surgeries, and operations on blood vessels and nerves were among those canceled due to the lack of medication.
Gaza Health Minister Bassem Naem said prescheduled surgeries -- including children's operations, cardiac catheterization, laparoscopic surgery and bone and nerve operations -- would be stopped.
The ministry would reduce medical services including laboratory tests, Naem added.
Khalef said dental clinics and general practice clinics would be forced to close soon, and that health centers would reduce their hours because of the shortages.
On Wednesday, the Gaza health ministry announced a state of emergency due to the shortage of medical supplies.
Medical services spokesman Adham Abu Salmiya said Thursday that warehouses had run out of over 178 types of medicine and that over 190 surgical items had either run out or were in short supply.
The health minister in the besieged coastal enclave appealed to human rights organizations to intervene to avert a looming crisis.