Figures obtained by the BBC through the Freedom of Information Act show the stun guns were used 34 times in 2010 and 65 times last year.
Human rights groups say they were being used too readily.
Devon and Cornwall police said the rise could be linked to the increased number of officers now trained to use Tasers.
Of the force's 3,200 officers, 480 are trained to use Tasers, up from 150 before 2009 and spending on the weapon rose from Â£33,470 in 2009 to Â£101,379 last year,  
           according to an FoI request
.
Nineteen of the 34 people that were shot with a Taser in 2010 were charged with an offence, and 37 of the 65 shot in 2011 were charged.
Eulette Ewart, from the human rights group Amnesty International, said Tasers should only be used in "limited circumstances " where there was a "serious threat to life or serious injury".
She said: "Given the increase, one must question whether the incidents in 2011 merited the need for a Taser to be drawn as opposed to 2010 when it was only drawn 34 times.
"We are not against Tasers but they are very dangerous and so they need to be used in a very limited set of circumstances."
The force's criteria for using Tasers
 states that they can be used if officers get permission from a senior officer and "in the course of their duty, may have to protect the public, themselves and /or the subject(s) at incidents of violence or threats of violence of such severity that they will need to use force".
Nigel Rabbits, chairman of the Devon and Cornwall branch of the Police Federation, the officers' staff association, wants most frontline officers to have Tasers.
He said: "In Devon and Cornwall, it has been recognised that Tasers are a really useful safety measure for officers and the public.
"They are really safe. Most people recover really quickly from a Taser and walk away."

The 36-year-old from Carrickfergus had been level on 15 with the late Robert Dunlop going into Thursday's races.
Seeley broke away to win the opening Supersport race ahead of runner-up Ian Hutchinson and Martin Jessopp.
The Supertwins race was abandoned after a two riders were injured in a high-speed crash.
Dungannon rider Ryan Farquhar and Dan Cooper from Stroud came off at Black Hill and were taken to hospital.
Forty-year-old Farquhar sustained chest and pelvic injuries, while Cooper, 28, had shoulder injuries.
Record-breaker Seeley has won at least one event at the North-West for nine years in a row.
He has also won at least one Supersport race in each of seven consecutive years from 2010 to 2016.
The Supersport event provided a thrilling start to racing at the 2016 North West.
Ballymoney's Michael Dunlop, a four-time winner at the North West, did not make it off the grid because of mechanical problems.
Seeley surged into an early lead but some exillerating action saw Fermanagh rider Lee Johnston, Yorkshire man Hutchinson and Michael's brother William Dunlop all take turns at the front.
Seeley, Hutchinson and Jessopp all broke the class lap record on the final circuit.
"The North West put me on the map when I first came here and now to be mentioned in the same sentence as the Dunlops is unbelievable," said an elated Seeley.
"It was a typical Supersport race. We managed to get a break and clinch the 16th win."

Dozens of soldiers seized the parliament compound in the administrative capital Garowe and blocked nearby streets.
However one of the region's most respected clan elders, Islan Issa Islan Mohamed, told them to return to their barracks.
He told the BBC that the "drama" was now over.
It had been reported that the soldiers were protesting about a delay in the payment of salaries as well as poor working conditions.
Last September soldiers took control of the central bank in Garowe in protest at lack of payments, Garowe Online reported.
Puntland profile
Puntland, an arid region of north-east Somalia, declared itself an autonomous state in August 1998, in part to avoid the clan warfare engulfing southern Somalia.
Unlike its neighbour, breakaway Somaliland, Puntland says it does not seek recognition as an independent entity, wishing instead to be part of a federal Somalia.
The number of times police have used Tasers in Devon and Cornwall has nearly doubled over a two-year period.
[NEXT_CONCEPT]
Alastair Seeley has broken the record for wins at the North West 200 road races by achieving his 16th career win at the international meeting.
[NEXT_CONCEPT]
Troops in Somalia's semi-autonomous region of Puntland have briefly staged a mutiny.