Abstract: Objective To explore evaluation of larval survey and mosq-ovitrap in grass-roots public health physician, and provide evidence for improvement of vector surveillance and making effective monitoring plans. Methods Semi-structured, individual in-depth interviews were conducted with field staff from basic health departments in Baiyun District, Guangzhou. Coding analyses were made by ATLAS.ti 6. Results Fourteen directors of vector-surveillance units were recruited. Larval surveys were considered as a labor-intensive monitoring method. Irresponsible attitudes as well as inaccessibility of urban premises can lead to a low-quality data collection. That larval survey equal each positive containers, and mosquitoes mainly breed in outdoor, were perceived as a methodological drawback and may limit its effectiveness. But it was mentioned that field workers can propagate knowledge about dengue fever and find mosquitoes breeding sites in the community. Mosq-ovitrap was said to be a time-saving method relatively. But it could not be placed in areas which were densely built and populated. The sizes of the cup body and cone shaped holes were considered too small to attract mosquitos. Results may differ even in the same area when placements were different. It was controversial that whether mosq-ovitrap was an efficient technique for detecting and monitoring Aedes populations. Conclusions Larval survey and mosq-ovitrap are quite different in cost, maneuverability and value. One should make the satisfactory monitoring plans according to specific conditions.