when both volume and temperature increases,then does pressure increases or decreases?

For a fixed amount of gas :
PV/T = constant
Hence, P = constant × T/V

In order words, P ∝ T/V
P is inversely proportional to V. An increase in V would lead to a decrease in pressure.
T is directly proportional to T. An increase in T would lead to an increase in pressure.

So, conclusion cannot be made on whether the pressure is increase or decrease.
This depends on the extent of increase (not the rate of change) in volume and the extent of increase (not the rate of change) in temperature.

It depends on the rates of change of temperature and volume. More information is needed.

Those are good answers, but typically the pressure changes only a little.