Nearly 800 nurses were assaulted in WA hospitals in the first six months of last year, shocking new figures have revealed.

There was also a big spike - more than 50 per cent - in assault cases on nurses across the entire WA health system in the first six months of 2018 compared to 2017, the figures have also shown.

Nurses were the victims of nearly 800 assaults in the first six months of 2018.

The data tabled in State Parliament this week documents every assault on a nurse across the state in the first six months of 2017 and 2018.

The figures, requested by the state opposition, show between January-June 2017 there were 504 cases of nurses assaulted at work.