The invention discloses a multifunctional circuit board manual welding fixture, and relates to a fixture. The fixture comprises a base plate; a fixed stand column is fixedly mounted on the top edge ofthe base plate; an adjustable slide rod capable of sliding on the fixed stand column up and down is mounted on the fixed stand column; an adjustable fixture and an adjustable pressing device are slidingly mounted on the adjustable slide rod; and an adjustable circuit board clamping device is arranged right under the adjustable pressing device. The fixture can effectively realize clamping and maintenance of circuit boards, prevents failed welding caused by displacement of chip pins due to finger shaking in manual clamping of parts of chips, particularly BGA-packed chips, and meanwhile, prevents the problem of finger scald caused by long-time blow welding of a hot air gun.